美股详情

本页面由Tiger Trade Technology Pte. Ltd.提供服务

National Presto Industries Inc

141.65

-0.2400-0.17%

盘后：141.650.00000.00%17:23 EDT

成交量：5.32万

成交额：751.59万

市值：10.13亿

市盈率：30.60

高：143.34

开：140.15

低：138.60

收：141.89

52周最高：149.86

52周最低：77.63

股本：715.19万

流通股本：528.88万

量比：0.37

换手率：1.01%

股息：1.00

股息率：0.71%

每股收益(TTM):4.63

每股收益(LYR):4.63

净资产收益率：8.67%

总资产收益率：5.63%

市净率：2.56

市盈率(LYR):30.60

数据加载中...

总览公司新闻资讯公告

年度报告

Form 10-K - Annual report [Section 13 and 15(d), not S-K Item 405]

重要事件披露

Form 8-K - Current report

重要事件披露

Form 8-K - Current report

重要事件披露

Form 8-K - Current report

重要事件披露

Form 8-K - Current report

季度报告

Form 10-Q - Quarterly report [Sections 13 or 15(d)]

超过5%披露

Form SC 13G - Statement of Beneficial Ownership by Certain Investors

重要事件披露

Form 8-K - Current report

重要事件披露

Form 8-K - Current report

重要事件披露

Form 8-K - Current report

季度报告

Form 10-Q - Quarterly report [Sections 13 or 15(d)]

重要事件披露

Form 8-K - Current report

重要事件披露

Form 8-K - Current report

重要事件披露

Form 8-K - Current report

季度报告

Form 10-Q - Quarterly report [Sections 13 or 15(d)]

重要事件披露

Form 8-K - Current report

重要事件披露

Form 8-K - Current report

年度报告

Form 10-K - Annual report [Section 13 and 15(d), not S-K Item 405]

重要事件披露

Form 8-K - Current report

超过5%披露

Form SC 13G/A - Statement of acquisition of beneficial ownership by individuals: [Amend]

{"basename":"/hans","ssrTDKData":{"titleTemplate":"%s - 老虎证券","title":"老虎证券全球投资理财平台| 一站式投资美股新股港股A股","description":"老虎证券助您一站式投资美股，新股，港股，A股等全球金融理财产品。新加坡华人最信赖的在线投资平台，现在加入即享低费用，24/5 无时差炒美股投资理财！","keywords":"老虎证券,老虎证券开户,老虎券商,老虎证券官网,老虎证券app,tigertrade老虎证券,股票,炒股,新加坡股票交易平台,投资,投资理财","social":{"ogDescription":"老虎证券助您一站式投资美股，新股，港股，A股等全球金融理财产品。新加坡华人最信赖的在线投资平台，现在加入即享低费用，24/5 无时差炒美股投资理财！","ogImage":"https://c1.itigergrowtha.com/portal5/static/media/og-logo.be62fbe1.png","ogUrl":"https://www-web.itiger.com/hans/stock/NPK/filings?page=2"},"companyName":"老虎证券"},"pageData":{"isMobile":false,"isTiger":false,"isTTM":true,"region":"SGP","license":"TBSG","edition":"fundamental","symbol":"NPK","isAnalysisPage":false},"__swrFallback__":{"@#url:\"https://hq.skytigris.cn/stock_info/detail/global\",params:#delay:false,,method:\"POST\",data:#items:@#symbol:\"NPK\",,,,,undefined,":{"symbol":"NPK","market":"US","secType":"STK","nameCN":"National Presto Industries Inc","latestPrice":141.65,"timestamp":1775160000000,"preClose":141.89,"halted":0,"volume":53224,"hourTrading":{"tag":"盘后","latestPrice":141.65,"preClose":141.65,"latestTime":"17:23 EDT","volume":1618,"amount":229189.7,"timestamp":1775164999463,"change":0,"changeRate":0,"amplitude":0},"delay":0,"changeRate":-0.0016914511241100901,"floatShares":5288814,"shares":7151940,"eps":4.629075,"marketStatus":"耶稣受难日休市","change":-0.24,"latestTime":"04-02 16:00:00 EDT","open":140.15,"high":143.34,"low":138.6,"amount":7515916.45408,"amplitude":0.033406,"askPrice":0,"askSize":0,"bidPrice":0,"bidSize":0,"shortable":3,"etf":0,"ttmEps":4.629075,"tradingStatus":0,"nextMarketStatus":{"tag":"盘前交易","tradingStatus":1,"beginTime":1775462400000},"marketStatusCode":7,"adr":0,"adrRate":0,"exchange":"NYSE","adjPreClose":141.89,"dividendRate":0.00706,"postHourTrading":{"tag":"盘后","latestPrice":141.65,"preClose":141.65,"latestTime":"17:23 EDT","volume":1618,"amount":229189.7,"timestamp":1775164999463,"change":0,"changeRate":0,"amplitude":0},"volumeRatio":0.37090970961040926},"@#url:\"https://hq.skytigris.cn/stock_info/fundamental/all\",params:#delay:false,,method:\"POST\",data:#items:@#symbol:\"NPK\",,,,,undefined,":{"symbol":"NPK","floatShares":5288814,"roa":"5.63%","roe":"8.67%","lyrEps":4.629075,"volumeRatio":0.37090970961040926,"shares":7151940,"dividePrice":1,"high":143.34,"amplitude":0.033406,"preClose":141.89,"low":138.6,"week52Low":77.63,"pbRate":"2.56","psRate":"2.01","week52High":149.855,"institutionHeld":0.5765,"latestPrice":141.65,"eps":4.629075,"divideRate":0.00706,"volume":53224,"delay":0,"ttmEps":4.629075,"open":140.15,"prevYearClose":106.76,"prevWeekClose":137.95,"prevMonthClose":137.06,"prevQuarterClose":137.06,"fiveDayClose":136.42,"twentyDayClose":135.49,"sixtyDayClose":110.74,"dividendPayoutRate":0.21602587990041205,"dividendFrequency":"A","dividendGrowthYears":0,"dividendGrowthRate":-0.7777777777777778,"fiveYearAvgDividendRate":0.04949439624189851},"@#url:\"https://hq.skytigris.cn/fundamental/corporate_actions/details/NPK\",params:#limit:5,,,undefined,":[{"date":"2026-03-09","symbol":"NPK","amount":1,"announcedDate":"2026-02-27","type":"dividend","lastAmount":null,"market":"US","newRecordDate":"2026-03-09","defaultRemindTime":1773063000000,"name":"National Presto Industries Inc","lastCurrency":null,"lastExecuteDate":null,"recordDate":"2026-03-20","payableDate":"2026-03-09","currency":"USD","dateTimestamp":1773028800000,"payDate":"2026-03-20"},{"market":"US","date":"2026-02-27","symbol":"NPK","fiscalQuarterEnding":null,"expectedEps":null,"name":null,"time":"盘后","type":"earning","dateTimestamp":1772168400000,"reportTimeType":"post","actualEps":null},{"market":"US","date":"2025-10-24","symbol":"NPK","fiscalQuarterEnding":null,"expectedEps":null,"name":null,"time":"盘后","type":"earning","dateTimestamp":1761278400000,"reportTimeType":"post","actualEps":null},{"market":"US","date":"2025-07-25","symbol":"NPK","fiscalQuarterEnding":null,"expectedEps":null,"name":null,"time":"盘后","type":"earning","dateTimestamp":1753416000000,"reportTimeType":"post","actualEps":null},{"market":"US","date":"2025-05-02","symbol":"NPK","fiscalQuarterEnding":null,"expectedEps":null,"name":null,"time":"盘后","type":"earning","dateTimestamp":1746158400000,"reportTimeType":"post","actualEps":null}],"@#url:\"https://hq.skytigris.cn/fundamental/dividend/history\",params:#symbol:\"NPK\",market:\"US\",,,undefined,":[{"executeDate":"2017-02-27","recordDate":"2017-03-01","paymentDate":"2017-03-15","value":4.5,"currency":"USD"},{"executeDate":"2018-02-28","recordDate":"2018-03-01","paymentDate":"2018-03-15","value":5,"currency":"USD"},{"executeDate":"2020-02-28","recordDate":"2020-03-02","paymentDate":"2020-03-13","value":5,"currency":"USD"},{"executeDate":"2021-02-26","recordDate":"2021-03-01","paymentDate":"2021-03-12","value":5.25,"currency":"USD"},{"executeDate":"2022-02-28","recordDate":"2022-03-01","paymentDate":"2022-03-15","value":4.5,"currency":"USD"}],"@#url:\"https://hq.skytigris.cn/fundamental/estimate/recommendation\",params:#symbol:\"NPK\",market:\"US\",delay:false,,,undefined,":{},"@#url:\"https://hq.skytigris.cn/value_analysis/stock/NPK\",params:#withQuantilePoint:true,period:\"5year\",factor:\"peRate\",delay:false,algorithm:1,,,undefined,":{"brief":{"id":"NPK","date":"2026-04-01","current":30.600066,"percent":0.990354,"low":12.841968,"twenty":15.784534,"median":19.476048,"eighty":23.648863,"high":32.458447,"avg":19.59532,"sd":4.215517,"marketCap":981946085},"quantilePoints":[{"date":"2021-04-09","current":15.813534,"twenty":13.812162,"median":18.205068,"eighty":19.43189,"marketCap":742571915},{"date":"2021-04-16","current":16.015523,"twenty":13.812162,"median":18.13889,"eighty":19.43189,"marketCap":752056938},{"date":"2021-04-23","current":15.798687,"twenty":13.812162,"median":18.130676,"eighty":19.43189,"marketCap":741874730},{"date":"2021-04-30","current":15.464975,"twenty":13.812162,"median":18.104541,"eighty":19.420234,"marketCap":726204302},{"date":"2021-05-07","current":15.633334,"twenty":13.812162,"median":18.08076,"eighty":19.413575,"marketCap":734110104},{"date":"2021-05-14","current":15.956099,"twenty":13.812162,"median":18.060018,"eighty":19.404392,"marketCap":761568645},{"date":"2021-05-21","current":15.391651,"twenty":13.812162,"median":18.02419,"eighty":19.387927,"marketCap":734628133},{"date":"2021-05-28","current":14.950879,"twenty":13.812162,"median":17.988502,"eighty":19.376585,"marketCap":713590511},{"date":"2021-06-04","current":14.607401,"twenty":13.812162,"median":17.956995,"eighty":19.364908,"marketCap":697196645},{"date":"2021-06-11","current":14.972991,"twenty":13.812162,"median":17.919348,"eighty":19.352756,"marketCap":714645910},{"date":"2021-06-18","current":14.401019,"twenty":13.812162,"median":17.888416,"eighty":19.342185,"marketCap":687346253},{"date":"2021-06-25","current":15.22065,"twenty":13.812162,"median":17.855199,"eighty":19.327145,"marketCap":726466380},{"date":"2021-07-02","current":14.959724,"twenty":13.812162,"median":17.841203,"eighty":19.310514,"marketCap":714012671},{"date":"2021-07-09","current":14.816731,"twenty":13.812162,"median":17.828441,"eighty":19.293464,"marketCap":707187756},{"date":"2021-07-16","current":14.193164,"twenty":13.812162,"median":17.802287,"eighty":19.274992,"marketCap":677425502},{"date":"2021-07-23","current":14.393649,"twenty":13.812162,"median":17.753718,"eighty":19.257627,"marketCap":686994454},{"date":"2021-07-30","current":14.222647,"twenty":13.812162,"median":17.718934,"eighty":19.239092,"marketCap":678832701},{"date":"2021-08-06","current":13.161255,"twenty":13.785681,"median":17.677884,"eighty":19.229196,"marketCap":628173544},{"date":"2021-08-13","current":14.332404,"twenty":13.777797,"median":17.636849,"eighty":19.220725,"marketCap":635842777},{"date":"2021-08-20","current":13.622481,"twenty":13.765175,"median":17.604487,"eighty":19.220725,"marketCap":604347736},{"date":"2021-08-27","current":13.582821,"twenty":13.749399,"median":17.556946,"eighty":19.220725,"marketCap":602588251},{"date":"2021-09-03","current":13.455908,"twenty":13.735133,"median":17.542717,"eighty":19.21987,"marketCap":596957901},{"date":"2021-09-10","current":12.841968,"twenty":13.714031,"median":17.530991,"eighty":19.21987,"marketCap":569721081},{"date":"2021-09-17","current":13.113244,"twenty":13.693964,"median":17.530991,"eighty":19.21987,"marketCap":581755955},{"date":"2021-09-24","current":13.144972,"twenty":13.659158,"median":17.492078,"eighty":19.21987,"marketCap":583163542},{"date":"2021-10-01","current":13.232225,"twenty":13.609306,"median":17.458526,"eighty":19.21987,"marketCap":587034408},{"date":"2021-10-08","current":13.160836,"twenty":13.576801,"median":17.455768,"eighty":19.219015,"marketCap":583867336},{"date":"2021-10-15","current":13.167182,"twenty":13.554973,"median":17.455768,"eighty":19.219015,"marketCap":584148854},{"date":"2021-10-22","current":13.205256,"twenty":13.51259,"median":17.455768,"eighty":19.219015,"marketCap":585837959},{"date":"2021-10-29","current":13.190978,"twenty":13.475328,"median":17.455337,"eighty":19.219015,"marketCap":585204544},{"date":"2021-11-05","current":14.011151,"twenty":13.47258,"median":17.455337,"eighty":19.219015,"marketCap":621590684},{"date":"2021-11-12","current":17.31656,"twenty":13.47258,"median":17.448341,"eighty":19.219015,"marketCap":629543554},{"date":"2021-11-19","current":16.729985,"twenty":13.47258,"median":17.448341,"eighty":19.219015,"marketCap":608218601},{"date":"2021-11-26","current":16.047329,"twenty":13.47258,"median":17.445752,"eighty":19.219015,"marketCap":583400656},{"date":"2021-12-03","current":15.909842,"twenty":13.47258,"median":17.425606,"eighty":19.219015,"marketCap":578402292},{"date":"2021-12-10","current":16.0086,"twenty":13.473006,"median":17.360143,"eighty":19.21816,"marketCap":581992666},{"date":"2021-12-17","current":15.704578,"twenty":13.473006,"median":17.273857,"eighty":19.215702,"marketCap":570939945},{"date":"2021-12-23","current":15.92146,"twenty":13.473006,"median":17.224584,"eighty":19.205228,"marketCap":578824689},{"date":"2021-12-31","current":15.884668,"twenty":13.473006,"median":17.184504,"eighty":19.183992,"marketCap":577487098},{"date":"2022-01-07","current":16.173198,"twenty":13.473431,"median":17.150039,"eighty":19.1741,"marketCap":587976624},{"date":"2022-01-14","current":16.953586,"twenty":13.473431,"median":17.117631,"eighty":19.163217,"marketCap":616347622},{"date":"2022-01-21","current":15.998918,"twenty":13.473431,"median":16.982061,"eighty":19.159377,"marketCap":581640669},{"date":"2022-01-28","current":15.896286,"twenty":13.473431,"median":16.904231,"eighty":19.153221,"marketCap":577909495},{"date":"2022-02-04","current":15.849812,"twenty":13.473431,"median":16.849887,"eighty":19.142253,"marketCap":576219907},{"date":"2022-02-11","current":16.022155,"twenty":13.473431,"median":16.799263,"eighty":19.126104,"marketCap":582485463},{"date":"2022-02-18","current":15.328908,"twenty":13.473431,"median":16.645474,"eighty":19.100977,"marketCap":557282442},{"date":"2022-02-25","current":16.169325,"twenty":13.473431,"median":16.623403,"eighty":19.071317,"marketCap":587835825},{"date":"2022-03-04","current":15.752989,"twenty":13.473431,"median":16.581293,"eighty":19.071317,"marketCap":572699932},{"date":"2022-03-11","current":21.852,"twenty":13.473431,"median":16.518459,"eighty":19.074144,"marketCap":560591218},{"date":"2022-03-18","current":21.160617,"twenty":13.473431,"median":16.518459,"eighty":19.108887,"marketCap":542854476},{"date":"2022-03-25","current":21.761834,"twenty":13.473431,"median":16.518459,"eighty":19.134474,"marketCap":558278079},{"date":"2022-04-01","current":21.468089,"twenty":13.473431,"median":16.518459,"eighty":19.14566,"marketCap":550742346},{"date":"2022-04-08","current":21.23474,"twenty":13.473431,"median":16.518459,"eighty":19.155644,"marketCap":544756016},{"date":"2022-04-14","current":21.275919,"twenty":13.473431,"median":16.518459,"eighty":19.15979,"marketCap":545812427},{"date":"2022-04-22","current":21.130812,"twenty":13.473431,"median":16.518459,"eighty":19.17326,"marketCap":542089850},{"date":"2022-04-29","current":19.624424,"twenty":13.473431,"median":16.518459,"eighty":19.173399,"marketCap":503444980},{"date":"2022-05-06","current":20.112759,"twenty":13.473431,"median":16.518459,"eighty":19.181103,"marketCap":515972713},{"date":"2022-05-13","current":25.330595,"twenty":13.473431,"median":16.518459,"eighty":19.190991,"marketCap":495871718},{"date":"2022-05-20","current":23.902449,"twenty":13.473431,"median":16.518459,"eighty":19.215452,"marketCap":467914349},{"date":"2022-05-27","current":24.649846,"twenty":13.473431,"median":16.518459,"eighty":19.233787,"marketCap":482545395},{"date":"2022-06-03","current":24.912884,"twenty":13.473431,"median":16.518459,"eighty":19.240289,"marketCap":487694615},{"date":"2022-06-10","current":24.094946,"twenty":13.473431,"median":16.518459,"eighty":19.260204,"marketCap":471682657},{"date":"2022-06-17","current":22.405021,"twenty":13.473431,"median":16.518459,"eighty":19.260204,"marketCap":438600682},{"date":"2022-06-24","current":23.648142,"twenty":13.473006,"median":16.51516,"eighty":19.260614,"marketCap":462936037},{"date":"2022-07-01","current":23.824702,"twenty":13.473006,"median":16.51516,"eighty":19.272689,"marketCap":466392363},{"date":"2022-07-08","current":23.813892,"twenty":13.473006,"median":16.51516,"eighty":19.278159,"marketCap":466180751},{"date":"2022-07-15","current":24.062516,"twenty":13.473006,"median":16.51516,"eighty":19.278159,"marketCap":471047822},{"date":"2022-07-22","current":24.923694,"twenty":13.473006,"median":16.51516,"eighty":19.278159,"marketCap":487906227},{"date":"2022-07-29","current":25.655154,"twenty":13.473006,"median":16.51516,"eighty":19.278159,"marketCap":502225291},{"date":"2022-08-05","current":26.646048,"twenty":13.473006,"median":16.51516,"eighty":19.278159,"marketCap":521623037},{"date":"2022-08-12","current":31.839043,"twenty":13.473006,"median":16.51516,"eighty":19.281889,"marketCap":540244874},{"date":"2022-08-19","current":31.535576,"twenty":13.473006,"median":16.51516,"eighty":19.308689,"marketCap":535095654},{"date":"2022-08-26","current":29.56205,"twenty":13.473006,"median":16.51516,"eighty":19.331788,"marketCap":501608858},{"date":"2022-09-02","current":27.894298,"twenty":13.473006,"median":16.51516,"eighty":19.350096,"marketCap":473310441},{"date":"2022-09-09","current":27.648918,"twenty":13.473006,"median":16.51516,"eighty":19.384475,"marketCap":469146833},{"date":"2022-09-16","current":27.553261,"twenty":13.473006,"median":16.51516,"eighty":19.407327,"marketCap":467523732},{"date":"2022-09-23","current":27.237178,"twenty":13.473006,"median":16.51516,"eighty":19.420234,"marketCap":462160441},{"date":"2022-09-30","current":27.054183,"twenty":13.473006,"median":16.51516,"eighty":19.472715,"marketCap":459055378},{"date":"2022-10-07","current":26.729782,"twenty":13.473006,"median":16.51516,"eighty":19.49597,"marketCap":453550947},{"date":"2022-10-14","current":26.754736,"twenty":13.473006,"median":16.51516,"eighty":19.501365,"marketCap":453974365},{"date":"2022-10-21","current":28.626279,"twenty":13.473006,"median":16.51516,"eighty":19.501365,"marketCap":485730694},{"date":"2022-10-28","current":29.250126,"twenty":13.473006,"median":16.51516,"eighty":19.501365,"marketCap":496316137},{"date":"2022-11-04","current":29.033859,"twenty":13.473006,"median":16.51516,"eighty":19.501365,"marketCap":492646517},{"date":"2022-11-11","current":28.8675,"twenty":13.473006,"median":16.51516,"eighty":19.501365,"marketCap":489823732},{"date":"2022-11-18","current":22.303061,"twenty":13.473006,"median":16.51516,"eighty":19.501365,"marketCap":485448415},{"date":"2022-11-25","current":22.757701,"twenty":13.473006,"median":16.51516,"eighty":19.501365,"marketCap":495344123},{"date":"2022-12-02","current":22.874474,"twenty":13.473006,"median":16.51516,"eighty":19.547891,"marketCap":497885797},{"date":"2022-12-09","current":22.553349,"twenty":13.473006,"median":16.51516,"eighty":19.593234,"marketCap":490896192},{"date":"2022-12-16","current":21.700259,"twenty":13.473006,"median":16.51516,"eighty":19.634615,"marketCap":472327848},{"date":"2022-12-23","current":22.417114,"twenty":13.473006,"median":16.51516,"eighty":19.687799,"marketCap":487930905},{"date":"2022-12-30","current":22.206275,"twenty":13.473006,"median":16.51516,"eighty":19.787111,"marketCap":483341771},{"date":"2023-01-06","current":22.926373,"twenty":13.494691,"median":16.573277,"eighty":19.816189,"marketCap":499015430},{"date":"2023-01-13","current":23.305884,"twenty":13.538867,"median":16.623377,"eighty":19.868199,"marketCap":507275872},{"date":"2023-01-20","current":23.046389,"twenty":13.561656,"median":16.639515,"eighty":19.910798,"marketCap":501627707},{"date":"2023-01-27","current":23.688639,"twenty":13.581928,"median":16.798794,"eighty":19.973923,"marketCap":515606917},{"date":"2023-02-03","current":24.684451,"twenty":13.618976,"median":16.847828,"eighty":20.049274,"marketCap":537281752},{"date":"2023-02-10","current":23.82163,"twenty":13.663553,"median":16.901937,"eighty":20.161767,"marketCap":518501602},{"date":"2023-02-17","current":24.872584,"twenty":13.698901,"median":17.019398,"eighty":20.243446,"marketCap":541376672},{"date":"2023-02-24","current":24.836904,"twenty":13.712844,"median":17.12639,"eighty":20.273838,"marketCap":540600049},{"date":"2023-03-03","current":23.769731,"twenty":13.735116,"median":17.176488,"eighty":20.322102,"marketCap":517371968},{"date":"2023-03-10","current":23.902722,"twenty":13.747506,"median":17.224584,"eighty":20.42079,"marketCap":520266653},{"date":"2023-03-17","current":25.438811,"twenty":13.769629,"median":17.312761,"eighty":20.533282,"marketCap":526557952},{"date":"2023-03-24","current":24.162263,"twenty":13.784322,"median":17.449002,"eighty":20.731453,"marketCap":500134677},{"date":"2023-03-31","current":24.605983,"twenty":13.793216,"median":17.568531,"eighty":21.126106,"marketCap":509319238},{"date":"2023-04-06","current":24.117891,"twenty":13.823314,"median":17.639418,"eighty":21.154029,"marketCap":499216221},{"date":"2023-04-14","current":24.210048,"twenty":13.881139,"median":17.758725,"eighty":21.239132,"marketCap":501123783},{"date":"2023-04-21","current":24.356817,"twenty":13.909758,"median":17.806753,"eighty":21.314353,"marketCap":504161753},{"date":"2023-04-28","current":23.455724,"twenty":13.978161,"median":17.847203,"eighty":21.468089,"marketCap":485510029},{"date":"2023-05-05","current":23.26117,"twenty":14.016436,"median":17.919348,"eighty":21.652254,"marketCap":481482953},{"date":"2023-05-12","current":24.595743,"twenty":14.041326,"median":17.988502,"eighty":21.761834,"marketCap":509107286},{"date":"2023-05-19","current":19.954555,"twenty":14.041326,"median":18.05425,"eighty":21.761834,"marketCap":532028335},{"date":"2023-05-26","current":20.119117,"twenty":14.041326,"median":18.092327,"eighty":21.761834,"marketCap":536415906},{"date":"2023-06-02","current":20.246521,"twenty":14.041326,"median":18.135413,"eighty":21.761834,"marketCap":539812735},{"date":"2023-06-09","current":21.807212,"twenty":14.040743,"median":18.212568,"eighty":21.80723,"marketCap":581423890},{"date":"2023-06-16","current":21.079951,"twenty":14.040743,"median":18.212568,"eighty":21.80723,"marketCap":562033658},{"date":"2023-06-23","current":19.776721,"twenty":14.040161,"median":18.20856,"eighty":21.807248,"marketCap":527286928},{"date":"2023-06-30","current":19.370622,"twenty":14.038996,"median":18.191367,"eighty":21.807283,"marketCap":516459536},{"date":"2023-07-07","current":19.981097,"twenty":14.038996,"median":18.191367,"eighty":21.807283,"marketCap":532736008},{"date":"2023-07-14","current":20.387195,"twenty":14.038996,"median":18.191367,"eighty":21.807283,"marketCap":543563400},{"date":"2023-07-21","current":20.437626,"twenty":14.038996,"median":18.191367,"eighty":21.807283,"marketCap":544907979},{"date":"2023-07-28","current":20.238558,"twenty":14.038996,"median":18.220673,"eighty":21.807283,"marketCap":539600433},{"date":"2023-08-04","current":21.13569,"twenty":14.038996,"median":18.220673,"eighty":21.807283,"marketCap":563519771},{"date":"2023-08-11","current":21.093222,"twenty":14.038996,"median":18.220673,"eighty":21.807283,"marketCap":562387494},{"date":"2023-08-18","current":20.948396,"twenty":14.038996,"median":18.220673,"eighty":21.807301,"marketCap":533786081},{"date":"2023-08-25","current":20.262156,"twenty":14.038996,"median":18.220673,"eighty":21.807301,"marketCap":516299985},{"date":"2023-09-01","current":20.795589,"twenty":14.038996,"median":18.220673,"eighty":21.807301,"marketCap":529892416},{"date":"2023-09-08","current":19.887085,"twenty":14.038996,"median":18.220673,"eighty":21.807301,"marketCap":506742807},{"date":"2023-09-15","current":21.242896,"twenty":14.038996,"median":18.220673,"eighty":21.807301,"marketCap":541290235},{"date":"2023-09-22","current":20.615,"twenty":14.038996,"median":18.220673,"eighty":21.807301,"marketCap":525290812},{"date":"2023-09-29","current":20.120462,"twenty":14.038996,"median":18.220673,"eighty":21.807301,"marketCap":512689496},{"date":"2023-10-06","current":20.103792,"twenty":14.038996,"median":18.220673,"eighty":21.807301,"marketCap":512264732},{"date":"2023-10-13","current":20.601108,"twenty":14.038996,"median":18.220673,"eighty":21.807301,"marketCap":524936842},{"date":"2023-10-20","current":20.517759,"twenty":14.038996,"median":18.253441,"eighty":21.807301,"marketCap":522813025},{"date":"2023-10-27","current":20.281604,"twenty":14.037157,"median":18.216576,"eighty":21.808599,"marketCap":516795543},{"date":"2023-11-03","current":21.276236,"twenty":14.037157,"median":18.216576,"eighty":21.808599,"marketCap":542139762},{"date":"2023-11-10","current":21.879127,"twenty":14.037157,"median":18.216576,"eighty":21.852171,"marketCap":557502041},{"date":"2023-11-17","current":23.82835,"twenty":14.037157,"median":18.216576,"eighty":21.920006,"marketCap":561705699},{"date":"2023-11-24","current":23.19441,"twenty":14.037157,"median":18.216576,"eighty":22.052115,"marketCap":546761820},{"date":"2023-12-01","current":22.449304,"twenty":14.037157,"median":18.216576,"eighty":22.148353,"marketCap":529197451},{"date":"2023-12-08","current":23.521896,"twenty":14.037785,"median":18.219582,"eighty":22.256227,"marketCap":554481644},{"date":"2023-12-15","current":24.49534,"twenty":14.037785,"median":18.219582,"eighty":22.345753,"marketCap":577428642},{"date":"2023-12-22","current":24.122787,"twenty":14.037785,"median":18.291727,"eighty":22.417763,"marketCap":568646458},{"date":"2023-12-29","current":24.456282,"twenty":14.037157,"median":18.304753,"eighty":22.464685,"marketCap":576507929},{"date":"2024-01-05","current":24.071711,"twenty":14.03653,"median":18.336818,"eighty":22.501965,"marketCap":567442448},{"date":"2024-01-12","current":24.267001,"twenty":14.03653,"median":18.336818,"eighty":22.63398,"marketCap":572046013},{"date":"2024-01-19","current":24.888924,"twenty":14.035902,"median":18.336818,"eighty":22.708476,"marketCap":586706595},{"date":"2024-01-26","current":25.0752,"twenty":14.03653,"median":18.336818,"eighty":22.903182,"marketCap":591097688},{"date":"2024-02-02","current":23.74723,"twenty":14.03653,"median":18.336818,"eighty":23.017494,"marketCap":559793449},{"date":"2024-02-09","current":22.984098,"twenty":14.03653,"median":18.336818,"eighty":23.07688,"marketCap":541804135},{"date":"2024-02-16","current":23.557949,"twenty":14.03653,"median":18.336818,"eighty":23.1039,"marketCap":555331532},{"date":"2024-02-23","current":23.684136,"twenty":14.03653,"median":18.336818,"eighty":23.184764,"marketCap":558306143},{"date":"2024-03-01","current":23.233468,"twenty":14.037157,"median":18.352877,"eighty":23.214181,"marketCap":547682533},{"date":"2024-03-08","current":22.764772,"twenty":14.037157,"median":18.439023,"eighty":23.214181,"marketCap":536633978},{"date":"2024-03-15","current":22.551456,"twenty":14.037157,"median":18.558425,"eighty":23.214181,"marketCap":531605469},{"date":"2024-03-22","current":16.448219,"twenty":14.037157,"median":18.439023,"eighty":23.214181,"marketCap":568433985},{"date":"2024-03-28","current":16.776117,"twenty":14.037157,"median":18.366878,"eighty":23.214181,"marketCap":579765837},{"date":"2024-04-05","current":16.933919,"twenty":14.03653,"median":18.312769,"eighty":23.215053,"marketCap":585219290},{"date":"2024-04-12","current":16.343701,"twenty":14.03653,"median":18.219582,"eighty":23.215053,"marketCap":564821958},{"date":"2024-04-19","current":16.488876,"twenty":14.03653,"median":18.135413,"eighty":23.215053,"marketCap":569839081},{"date":"2024-04-26","current":17.099041,"twenty":14.037157,"median":18.084311,"eighty":23.214181,"marketCap":590925763},{"date":"2024-05-03","current":17.266012,"twenty":14.037157,"median":18.032206,"eighty":23.214181,"marketCap":596696105},{"date":"2024-05-10","current":17.696838,"twenty":14.037157,"median":17.919981,"eighty":23.214181,"marketCap":611585012},{"date":"2024-05-17","current":17.998832,"twenty":14.037157,"median":17.853848,"eighty":23.214181,"marketCap":580444344},{"date":"2024-05-24","current":16.495628,"twenty":14.037157,"median":17.772885,"eighty":23.214181,"marketCap":531967518},{"date":"2024-05-31","current":16.392187,"twenty":14.037157,"median":17.690709,"eighty":23.214181,"marketCap":528631631},{"date":"2024-06-07","current":16.317357,"twenty":14.037157,"median":17.66547,"eighty":23.214181,"marketCap":526218436},{"date":"2024-06-14","current":16.337165,"twenty":14.037157,"median":17.55124,"eighty":23.214181,"marketCap":526857223},{"date":"2024-06-21","current":16.167697,"twenty":14.03653,"median":17.342282,"eighty":23.215053,"marketCap":521392046},{"date":"2024-06-28","current":16.535244,"twenty":14.03653,"median":17.259327,"eighty":23.215053,"marketCap":533245092},{"date":"2024-07-05","current":15.494226,"twenty":14.03653,"median":17.22258,"eighty":23.215053,"marketCap":499673292},{"date":"2024-07-12","current":16.354772,"twenty":14.03653,"median":17.175091,"eighty":23.215053,"marketCap":527425033},{"date":"2024-07-19","current":16.526441,"twenty":14.03653,"median":17.134494,"eighty":23.215053,"marketCap":532961186},{"date":"2024-07-26","current":17.14709,"twenty":14.03653,"median":17.117631,"eighty":23.215053,"marketCap":552976509},{"date":"2024-08-02","current":16.376781,"twenty":14.03653,"median":17.086593,"eighty":23.215053,"marketCap":528134797},{"date":"2024-08-09","current":15.753054,"twenty":14.03653,"median":16.988788,"eighty":23.215053,"marketCap":517062491},{"date":"2024-08-16","current":15.836972,"twenty":14.03653,"median":16.941976,"eighty":23.215053,"marketCap":519816916},{"date":"2024-08-23","current":16.083579,"twenty":14.03653,"median":16.901544,"eighty":23.215053,"marketCap":527911319},{"date":"2024-08-30","current":16.93589,"twenty":14.03653,"median":16.875207,"eighty":23.215053,"marketCap":555886714},{"date":"2024-09-06","current":15.999213,"twenty":14.03653,"median":16.849887,"eighty":23.215053,"marketCap":525142181},{"date":"2024-09-13","current":16.589774,"twenty":14.03653,"median":16.815688,"eighty":23.215053,"marketCap":544526148},{"date":"2024-09-20","current":16.061947,"twenty":14.03653,"median":16.774068,"eighty":23.215053,"marketCap":527201284},{"date":"2024-09-27","current":16.100885,"twenty":14.03653,"median":16.662787,"eighty":23.215053,"marketCap":528479348},{"date":"2024-10-04","current":15.553589,"twenty":14.03653,"median":16.615625,"eighty":23.215053,"marketCap":510515452},{"date":"2024-10-11","current":15.380531,"twenty":14.03653,"median":16.595847,"eighty":23.215053,"marketCap":504835169},{"date":"2024-10-18","current":16.079253,"twenty":14.03653,"median":16.579362,"eighty":23.215053,"marketCap":527769312},{"date":"2024-10-25","current":16.157129,"twenty":14.03653,"median":16.533305,"eighty":23.215053,"marketCap":530325440},{"date":"2024-11-01","current":15.713668,"twenty":14.03653,"median":16.509506,"eighty":23.215053,"marketCap":515769714},{"date":"2024-11-08","current":16.006021,"twenty":14.03653,"median":16.488489,"eighty":23.215053,"marketCap":542396042},{"date":"2024-11-15","current":15.934781,"twenty":14.03653,"median":16.428941,"eighty":23.215053,"marketCap":539981921},{"date":"2024-11-22","current":16.48375,"twenty":14.03653,"median":16.40645,"eighty":23.215053,"marketCap":558584849},{"date":"2024-11-29","current":16.703757,"twenty":14.03653,"median":16.40645,"eighty":23.215053,"marketCap":566040220},{"date":"2024-12-06","current":18.551815,"twenty":14.03653,"median":16.40645,"eighty":23.215053,"marketCap":628665343},{"date":"2024-12-13","current":19.482129,"twenty":14.03653,"median":16.40645,"eighty":23.215053,"marketCap":660190914},{"date":"2024-12-20","current":19.580609,"twenty":14.03653,"median":16.40645,"eighty":23.215053,"marketCap":663528081},{"date":"2024-12-27","current":20.366347,"twenty":14.03653,"median":16.40645,"eighty":23.215053,"marketCap":690154408},{"date":"2025-01-03","current":20.137959,"twenty":14.03653,"median":16.40645,"eighty":23.215053,"marketCap":682415022},{"date":"2025-01-10","current":19.961954,"twenty":14.035902,"median":16.405392,"eighty":23.215926,"marketCap":676450725},{"date":"2025-01-17","current":20.42292,"twenty":14.035902,"median":16.405392,"eighty":23.215926,"marketCap":692071504},{"date":"2025-01-24","current":20.531876,"twenty":14.035902,"median":16.405392,"eighty":23.215926,"marketCap":695763688},{"date":"2025-01-31","current":20.150531,"twenty":14.035902,"median":16.422999,"eighty":23.215926,"marketCap":682841044},{"date":"2025-02-07","current":20.542353,"twenty":14.035902,"median":16.452321,"eighty":23.215926,"marketCap":696118706},{"date":"2025-02-14","current":20.823123,"twenty":14.035902,"median":16.488876,"eighty":23.215926,"marketCap":705633180},{"date":"2025-02-21","current":20.747692,"twenty":14.035902,"median":16.517637,"eighty":23.215926,"marketCap":703077053},{"date":"2025-02-28","current":21.317615,"twenty":14.038996,"median":16.585447,"eighty":23.215926,"marketCap":722390015},{"date":"2025-03-07","current":18.635627,"twenty":14.055681,"median":16.622977,"eighty":23.216798,"marketCap":631505484},{"date":"2025-03-14","current":15.243669,"twenty":14.075231,"median":16.691997,"eighty":23.216798,"marketCap":632002509},{"date":"2025-03-21","current":15.400014,"twenty":14.096495,"median":16.691997,"eighty":23.216798,"marketCap":638484599},{"date":"2025-03-28","current":15.136398,"twenty":14.197457,"median":16.691997,"eighty":23.216798,"marketCap":627555069},{"date":"2025-04-04","current":14.200819,"twenty":14.246365,"median":16.691997,"eighty":23.216798,"marketCap":588765951},{"date":"2025-04-11","current":14.479942,"twenty":14.250049,"median":16.683896,"eighty":23.215926,"marketCap":600338395},{"date":"2025-04-17","current":14.342103,"twenty":14.290517,"median":16.683896,"eighty":23.215926,"marketCap":594623608},{"date":"2025-04-25","current":14.521294,"twenty":14.281613,"median":16.691997,"eighty":23.216798,"marketCap":602052831},{"date":"2025-05-02","current":14.799891,"twenty":14.306843,"median":16.691997,"eighty":23.216798,"marketCap":613603485},{"date":"2025-05-09","current":13.625186,"twenty":14.321428,"median":16.691997,"eighty":23.216798,"marketCap":579097665},{"date":"2025-05-16","current":14.658806,"twenty":14.342103,"median":16.691997,"eighty":23.216798,"marketCap":623028571},{"date":"2025-05-23","current":14.088732,"twenty":14.353936,"median":16.691997,"eighty":23.216798,"marketCap":598799285},{"date":"2025-05-30","current":14.483916,"twenty":14.3847,"median":16.691997,"eighty":23.216798,"marketCap":615595398},{"date":"2025-06-06","current":14.5495,"twenty":14.396597,"median":16.691997,"eighty":23.216798,"marketCap":618382838},{"date":"2025-06-13","current":16.074742,"twenty":14.401516,"median":16.701928,"eighty":23.216798,"marketCap":683208686},{"date":"2025-06-20","current":15.627427,"twenty":14.445304,"median":16.703757,"eighty":23.220132,"marketCap":664196916},{"date":"2025-06-27","current":16.363983,"twenty":14.469947,"median":16.703757,"eighty":23.220132,"marketCap":695502011},{"date":"2025-07-03","current":18.212099,"twenty":14.490443,"median":16.750259,"eighty":23.220132,"marketCap":774050640},{"date":"2025-07-11","current":17.633617,"twenty":14.515613,"median":16.801551,"eighty":23.220132,"marketCap":749463990},{"date":"2025-07-18","current":18.538336,"twenty":14.544479,"median":16.851946,"eighty":23.220132,"marketCap":787916367},{"date":"2025-07-25","current":17.616801,"twenty":14.586038,"median":16.890335,"eighty":23.220132,"marketCap":748749262},{"date":"2025-08-01","current":16.219363,"twenty":14.607401,"median":16.90115,"eighty":23.220132,"marketCap":689355348},{"date":"2025-08-08","current":16.765894,"twenty":14.66492,"median":16.90115,"eighty":23.220132,"marketCap":712584015},{"date":"2025-08-15","current":17.845879,"twenty":14.706442,"median":16.962216,"eighty":23.220132,"marketCap":741978119},{"date":"2025-08-22","current":18.071145,"twenty":14.746918,"median":17.013844,"eighty":23.220132,"marketCap":751344002},{"date":"2025-08-29","current":18.320485,"twenty":14.798244,"median":17.105225,"eighty":23.220132,"marketCap":761710819},{"date":"2025-09-05","current":18.703953,"twenty":14.854363,"median":17.135366,"eighty":23.223466,"marketCap":777654269},{"date":"2025-09-12","current":19.476048,"twenty":14.891323,"median":17.188907,"eighty":23.220132,"marketCap":809755654},{"date":"2025-09-19","current":19.850918,"twenty":14.964442,"median":17.31656,"eighty":23.220132,"marketCap":825341627},{"date":"2025-09-26","current":19.128691,"twenty":14.98451,"median":17.484766,"eighty":23.220132,"marketCap":795313605},{"date":"2025-10-03","current":19.837162,"twenty":15.058133,"median":17.624682,"eighty":23.220132,"marketCap":824769665},{"date":"2025-10-10","current":19.324724,"twenty":15.112543,"median":17.678285,"eighty":23.220132,"marketCap":803464069},{"date":"2025-10-17","current":18.872473,"twenty":15.134674,"median":17.774874,"eighty":23.220132,"marketCap":784660807},{"date":"2025-10-24","current":19.434778,"twenty":15.172357,"median":17.803462,"eighty":23.220132,"marketCap":808039767},{"date":"2025-10-31","current":18.146807,"twenty":15.230807,"median":17.895391,"eighty":23.220132,"marketCap":754489795},{"date":"2025-11-07","current":18.406465,"twenty":15.248301,"median":18.024716,"eighty":23.220132,"marketCap":765285584},{"date":"2025-11-14","current":17.340382,"twenty":15.276092,"median":18.071145,"eighty":23.220132,"marketCap":672997554},{"date":"2025-11-21","current":17.211388,"twenty":15.304509,"median":18.071145,"eighty":23.220132,"marketCap":667991196},{"date":"2025-11-28","current":17.2722,"twenty":15.330046,"median":18.071145,"eighty":23.220132,"marketCap":670351336},{"date":"2025-12-05","current":17.554142,"twenty":15.356211,"median":18.071145,"eighty":23.220132,"marketCap":681293804},{"date":"2025-12-12","current":19.424544,"twenty":15.38986,"median":18.237806,"eighty":23.220132,"marketCap":753885995},{"date":"2025-12-19","current":19.42823,"twenty":15.399348,"median":18.320485,"eighty":23.220132,"marketCap":754029034},{"date":"2025-12-26","current":20.226146,"twenty":15.424088,"median":18.406465,"eighty":23.220132,"marketCap":784996934},{"date":"2026-01-02","current":19.673317,"twenty":15.473656,"median":18.458052,"eighty":23.220132,"marketCap":763541114},{"date":"2026-01-09","current":21.591631,"twenty":15.524678,"median":18.551815,"eighty":23.220132,"marketCap":837992809},{"date":"2026-01-16","current":21.962026,"twenty":15.558194,"median":18.635627,"eighty":23.220132,"marketCap":852368209},{"date":"2026-01-23","current":22.538811,"twenty":15.567419,"median":18.731467,"eighty":23.220132,"marketCap":874753781},{"date":"2026-01-30","current":23.09901,"twenty":15.587228,"median":18.870753,"eighty":23.220132,"marketCap":896495679},{"date":"2026-02-06","current":24.661671,"twenty":15.668368,"median":18.962494,"eighty":23.278304,"marketCap":957144130},{"date":"2026-02-13","current":22.367434,"twenty":15.704578,"median":19.039273,"eighty":23.33946,"marketCap":868102477},{"date":"2026-02-20","current":23.412279,"twenty":15.720164,"median":19.128691,"eighty":23.396272,"marketCap":908653977},{"date":"2026-02-27","current":24.606389,"twenty":15.720164,"median":19.192316,"eighty":23.414142,"marketCap":954998548},{"date":"2026-03-06","current":24.96757,"twenty":15.724879,"median":19.301933,"eighty":23.449443,"marketCap":969016350},{"date":"2026-03-13","current":24.427641,"twenty":15.724879,"median":19.364792,"eighty":23.476787,"marketCap":948061166},{"date":"2026-03-20","current":28.952783,"twenty":15.740808,"median":19.424544,"eighty":23.523098,"marketCap":957873862},{"date":"2026-03-27","current":29.5418,"twenty":15.765308,"median":19.434778,"eighty":23.579915,"marketCap":977360899},{"date":"2026-04-01","current":29.680392,"twenty":15.784534,"median":19.476048,"eighty":23.648863,"marketCap":981946085}],"updateTime":1775200655503},"$inf$@#url:\"https://stock-news.skytigris.cn/v3/notice/important/events/list\",params:#symbol:\"NPK\",pageSize:20,pageCount:2,market:\"us\",,,undefined,":[{"items":[{"cdn_pdf":false,"hasAttachments":true,"id":"19242955","market":"us","labels":[],"media":"sec.gov","original_id":"AN143774925007735-NPK","pdf_url":"","pub_time":1741924800000,"showTitleType":true,"size":0,"source":"sec_us","summary":"Form 10-K - Annual report [Section 13 and 15(d), not S-K Item 405]","symbol":"NPK","title":"Form 10-K - Annual report [Section 13 and 15(d), not S-K Item 405]","titleType":"年度报告","type":"usFinancials","url":"https://www.sec.gov/Archives/edgar/data/80172/000143774925007735/0001437749-25-007735-index.htm","us_notice_code":"Form 10-K","us_title_en":"Form 10-K - Annual report [Section 13 and 15(d), not S-K Item 405]","is_important":0,"hasEarnInfos":false,"gpt_zh_title":"","gpt_en_title":"","attachments":[{"description":"FORM 10-K","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/80172/000143774925007735/npk20241231_10k.htm","primary":true,"translateUrl":"","linkName":"npk20241231_10k.htm","type":"10-K","id":"NTFILE6nifbcDH5dVV2WWF","market":"us","size":1412414},{"description":"EXHIBIT 21","seq":2,"linkUrl":"https://www.sec.gov/Archives/edgar/data/80172/000143774925007735/ex_752712.htm","primary":false,"translateUrl":"","linkName":"ex_752712.htm","type":"EX-21","id":"NTFILE3L1YJrP6hQKy5qQ6","market":"us","size":9052},{"description":"EXHIBIT 23.1","seq":3,"linkUrl":"https://www.sec.gov/Archives/edgar/data/80172/000143774925007735/ex_752713.htm","primary":false,"translateUrl":"","linkName":"ex_752713.htm","type":"EX-23.1","id":"NTFILE2iyzLKtquiEqTqHJ","market":"us","size":3000},{"description":"EXHIBIT 31.1","seq":4,"linkUrl":"https://www.sec.gov/Archives/edgar/data/80172/000143774925007735/ex_752714.htm","primary":false,"translateUrl":"","linkName":"ex_752714.htm","type":"EX-31.1","id":"NTFILEELf45f26hyT4GoMG","market":"us","size":10830},{"description":"EXHIBIT 31.2","seq":5,"linkUrl":"https://www.sec.gov/Archives/edgar/data/80172/000143774925007735/ex_752715.htm","primary":false,"translateUrl":"","linkName":"ex_752715.htm","type":"EX-31.2","id":"NTFILE5wrB6Ng34BinPQWd","market":"us","size":10552},{"description":"EXHIBIT 32.1","seq":6,"linkUrl":"https://www.sec.gov/Archives/edgar/data/80172/000143774925007735/ex_752716.htm","primary":false,"translateUrl":"","linkName":"ex_752716.htm","type":"EX-32.1","id":"NTFILEDsGAg2TVLcwYE4oC","market":"us","size":5343},{"description":"EXHIBIT 32.2","seq":7,"linkUrl":"https://www.sec.gov/Archives/edgar/data/80172/000143774925007735/ex_752717.htm","primary":false,"translateUrl":"","linkName":"ex_752717.htm","type":"EX-32.2","id":"NTFILE5t4L3xrSoFPKMzKd","market":"us","size":5604}],"type_name":"财务报告","type_name_en":"Financial Report","titleTypeEn":"Annual Report","us_type":"usFinancials","us_type_zh":"财务报告","earn_infos":[],"event_type":"important_notice","event_name":"年度报告","pubTime":"2025-03-14 12:00","pubTimestamp":1741924800,"title_zh":"Form 10-K - Annual report [Section 13 and 15(d), not S-K Item 405","summary_en":"","summary_zh":"","notice_type":"","filling_tag":"","gpt_icon":0},{"cdn_pdf":false,"hasAttachments":true,"id":"19211202","market":"us","labels":[],"media":"sec.gov","original_id":"AN143774925006475-NPK","pdf_url":"","pub_time":1741237200000,"showTitleType":true,"size":0,"source":"sec_us","summary":"Form 8-K - Current report","symbol":"NPK","title":"Form 8-K - Current report","titleType":"重要事件披露","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/80172/000143774925006475/0001437749-25-006475-index.htm","us_notice_code":"Form 8-K","us_title_en":"Item 1.05: Material Cybersecurity Incidents;\nItem 9.01: Financial Statements and Exhibits","is_important":0,"hasEarnInfos":false,"gpt_zh_title":"","gpt_en_title":"","attachments":[{"description":"FORM 8-K","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/80172/000143774925006475/npk20250306_8k.htm","primary":true,"translateUrl":"","linkName":"npk20250306_8k.htm","type":"8-K","id":"NTFILECZ537ncrZzPyVpbr","market":"us","size":34291}],"type_name":"交易披露","type_name_en":"Transaction Related","titleTypeEn":"Major Issues Report","us_type":"usAnnouncement","us_type_zh":"交易披露","earn_infos":[],"event_type":"important_notice","event_name":"重要事件披露","pubTime":"2025-03-06 13:00","pubTimestamp":1741237200,"title_zh":"Form 8-K - Current report","summary_en":"Item 1.05: Material Cybersecurity Incidents;\nItem 9.01: Financial Statements and Exhibits","summary_zh":"第1.05项：重大网络安全事件；项目9.01：财务报表和附件","notice_type":"","filling_tag":"","gpt_icon":0},{"cdn_pdf":false,"hasAttachments":true,"id":"19136559","market":"us","labels":[],"media":"sec.gov","original_id":"AN143774925004749-NPK","pdf_url":"","pub_time":1740114000000,"showTitleType":true,"size":0,"source":"sec_us","summary":"Form 8-K - Current report","symbol":"NPK","title":"Form 8-K - Current report","titleType":"重要事件披露","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/80172/000143774925004749/0001437749-25-004749-index.htm","us_notice_code":"Form 8-K","us_title_en":"Item 2.02: Results of Operations and Financial Condition;\nItem 9.01: Financial Statements and Exhibits","is_important":0,"hasEarnInfos":false,"gpt_zh_title":"","gpt_en_title":"","attachments":[{"description":"EXHIBIT 99.1","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/80172/000143774925004749/ex_780995.htm","primary":true,"translateUrl":"","linkName":"ex_780995.htm","type":"EX-99.1","id":"NTFILE5wUywxYUaaKL9zva","market":"us","size":17597},{"description":"FORM 8-K","seq":2,"linkUrl":"https://www.sec.gov/Archives/edgar/data/80172/000143774925004749/npk20250221_8k.htm","primary":false,"translateUrl":"","linkName":"npk20250221_8k.htm","type":"8-K","id":"NTFILE5cWD3qzZN9ukDyDe","market":"us","size":26951}],"type_name":"交易披露","type_name_en":"Transaction Related","titleTypeEn":"Major Issues Report","us_type":"usAnnouncement","us_type_zh":"交易披露","earn_infos":[],"event_type":"important_notice","event_name":"重要事件披露","pubTime":"2025-02-21 13:00","pubTimestamp":1740114000,"title_zh":"Form 8-K - Current report","summary_en":"Item 2.02: Results of Operations and Financial Condition;\nItem 9.01: Financial Statements and Exhibits","summary_zh":"第2.02项：经营业绩和财务状况；项目9.01：财务报表和附件","notice_type":"","filling_tag":"","gpt_icon":0},{"cdn_pdf":false,"hasAttachments":true,"id":"19136590","market":"us","labels":[],"media":"sec.gov","original_id":"AN143774925003993-NPK","pdf_url":"","pub_time":1739509200000,"showTitleType":true,"size":0,"source":"sec_us","summary":"Form 8-K - Current report","symbol":"NPK","title":"Form 8-K - Current report","titleType":"重要事件披露","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/80172/000143774925003993/0001437749-25-003993-index.htm","us_notice_code":"Form 8-K","us_title_en":"Item 8.01: Other Events;\nItem 9.01: Financial Statements and Exhibits","is_important":0,"hasEarnInfos":false,"gpt_zh_title":"","gpt_en_title":"","attachments":[{"description":"EXHIBIT 99.1","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/80172/000143774925003993/ex_778019.htm","primary":true,"translateUrl":"","linkName":"ex_778019.htm","type":"EX-99.1","id":"NTFILEB6JthddJ9ZCRzF2m","market":"us","size":4668},{"description":"FORM 8-K","seq":2,"linkUrl":"https://www.sec.gov/Archives/edgar/data/80172/000143774925003993/npk20250213_8k.htm","primary":false,"translateUrl":"","linkName":"npk20250213_8k.htm","type":"8-K","id":"NTFILE8tXB7bZSpisqupAY","market":"us","size":27129}],"type_name":"交易披露","type_name_en":"Transaction Related","titleTypeEn":"Major Issues Report","us_type":"usAnnouncement","us_type_zh":"交易披露","earn_infos":[],"event_type":"important_notice","event_name":"重要事件披露","pubTime":"2025-02-14 13:00","pubTimestamp":1739509200,"title_zh":"Form 8-K - Current report","summary_en":"Item 8.01: Other Events;\nItem 9.01: Financial Statements and Exhibits","summary_zh":"项目8.01：其他事件；项目9.01：财务报表和附件","notice_type":"","filling_tag":"","gpt_icon":0},{"cdn_pdf":false,"hasAttachments":true,"id":"19076782","market":"us","labels":[],"media":"sec.gov","original_id":"AN143774925001833-NPK","pdf_url":"","pub_time":1737694800000,"showTitleType":true,"size":0,"source":"sec_us","summary":"Form 8-K - Current report","symbol":"NPK","title":"Form 8-K - Current report","titleType":"重要事件披露","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/80172/000143774925001833/0001437749-25-001833-index.htm","us_notice_code":"Form 8-K","us_title_en":"Item 8.01: Other Events;\nItem 9.01: Financial Statements and Exhibits","is_important":0,"hasEarnInfos":false,"gpt_zh_title":"","gpt_en_title":"","attachments":[{"description":"EXHIBIT 99.1","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/80172/000143774925001833/ex_769691.htm","primary":true,"translateUrl":"","linkName":"ex_769691.htm","type":"EX-99.1","id":"NTFILECfh5mRxvp1tJSDAE","market":"us","size":4894},{"description":"FORM 8-K","seq":2,"linkUrl":"https://www.sec.gov/Archives/edgar/data/80172/000143774925001833/npk20250123_8k.htm","primary":false,"translateUrl":"","linkName":"npk20250123_8k.htm","type":"8-K","id":"NTFILEFwGmRqGr2aHiQqNS","market":"us","size":29067}],"type_name":"交易披露","type_name_en":"Transaction Related","titleTypeEn":"Major Issues Report","us_type":"usAnnouncement","us_type_zh":"交易披露","earn_infos":[],"event_type":"important_notice","event_name":"重要事件披露","pubTime":"2025-01-24 13:00","pubTimestamp":1737694800,"title_zh":"Form 8-K - Current report","summary_en":"Item 8.01: Other Events;\nItem 9.01: Financial Statements and Exhibits","summary_zh":"项目8.01：其他事件；项目9.01：财务报表和附件","notice_type":"","filling_tag":"","gpt_icon":0},{"cdn_pdf":false,"hasAttachments":true,"id":"18812655","market":"us","labels":[],"media":"sec.gov","original_id":"AN143774924034199-NPK","pdf_url":"","pub_time":1731042000000,"showTitleType":true,"size":0,"source":"sec_us","summary":"Form 10-Q - Quarterly report [Sections 13 or 15(d)]","symbol":"NPK","title":"Form 10-Q - Quarterly report [Sections 13 or 15(d)]","titleType":"季度报告","type":"usFinancials","url":"https://www.sec.gov/Archives/edgar/data/80172/000143774924034199/0001437749-24-034199-index.htm","us_notice_code":"Form 10-Q","us_title_en":"Form 10-Q - Quarterly report [Sections 13 or 15(d)]","is_important":0,"hasEarnInfos":false,"gpt_zh_title":"","gpt_en_title":"","attachments":[{"description":"FORM 10-Q","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/80172/000143774924034199/npk20240930_10q.htm","primary":true,"translateUrl":"","linkName":"npk20240930_10q.htm","type":"10-Q","id":"NTFILE45wrmnays6i4DmcQ","market":"us","size":745313},{"description":"EXHIBIT 31.1","seq":2,"linkUrl":"https://www.sec.gov/Archives/edgar/data/80172/000143774924034199/ex_717877.htm","primary":false,"translateUrl":"","linkName":"ex_717877.htm","type":"EX-31.1","id":"NTFILEAuvwjyuteXNaP5nY","market":"us","size":10569},{"description":"EXHIBIT 31.2","seq":3,"linkUrl":"https://www.sec.gov/Archives/edgar/data/80172/000143774924034199/ex_717878.htm","primary":false,"translateUrl":"","linkName":"ex_717878.htm","type":"EX-31.2","id":"NTFILEHt5nMAdXBqdUz5yW","market":"us","size":10754},{"description":"EXHIBIT 32.1","seq":4,"linkUrl":"https://www.sec.gov/Archives/edgar/data/80172/000143774924034199/ex_717879.htm","primary":false,"translateUrl":"","linkName":"ex_717879.htm","type":"EX-32.1","id":"NTFILEAWNRFbZYCkqJYAmd","market":"us","size":5188},{"description":"EXHIBIT 32.2","seq":5,"linkUrl":"https://www.sec.gov/Archives/edgar/data/80172/000143774924034199/ex_717880.htm","primary":false,"translateUrl":"","linkName":"ex_717880.htm","type":"EX-32.2","id":"NTFILEEECNe8Luv4N347kt","market":"us","size":5229}],"type_name":"财务报告","type_name_en":"Financial Report","titleTypeEn":"Quarterly Report","us_type":"usFinancials","us_type_zh":"财务报告","earn_infos":[],"event_type":"important_notice","event_name":"季度报告","pubTime":"2024-11-08 13:00","pubTimestamp":1731042000,"title_zh":"Form 10-Q - Quarterly report [Sections 13 or 15(d","summary_en":"","summary_zh":"","notice_type":"","filling_tag":"","gpt_icon":0},{"cdn_pdf":false,"hasAttachments":true,"id":"18780299","market":"us","labels":[],"media":"sec.gov","original_id":"AN35420424004758-NPK","pdf_url":"","pub_time":1730347200000,"showTitleType":true,"size":0,"source":"sec_us","summary":"Form SC 13G - Statement of Beneficial Ownership by Certain Investors","symbol":"NPK","title":"Form SC 13G - Statement of Beneficial Ownership by Certain Investors","titleType":"超过5%披露","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/80172/000035420424004758/0000354204-24-004758-index.htm","us_notice_code":"Form SC 13G","us_title_en":"Form SC 13G - Statement of Beneficial Ownership by Certain Investors","is_important":0,"hasEarnInfos":false,"gpt_zh_title":"","gpt_en_title":"","attachments":[{"description":"SEC SCHEDULE 13G","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/80172/000035420424004758/SEC13G_Filing.htm","primary":true,"translateUrl":"","linkName":"SEC13G_Filing.htm","type":"SC 13G","id":"NTFILEBBodWSzYt2w7w2FR","market":"us","size":17521}],"type_name":"交易披露","type_name_en":"Transaction Related","titleTypeEn":"Beneficial Ownership Change","us_type":"usAnnouncement","us_type_zh":"交易披露","earn_infos":[],"event_type":"important_notice","event_name":"超过5%披露","pubTime":"2024-10-31 12:00","pubTimestamp":1730347200,"title_zh":"Form SC 13G - Statement of Beneficial Ownership by Certain Investors","summary_en":"","summary_zh":"","notice_type":"","filling_tag":"","gpt_icon":0},{"cdn_pdf":false,"hasAttachments":true,"id":"18754961","market":"us","labels":[],"media":"sec.gov","original_id":"AN143774924032289-NPK","pdf_url":"","pub_time":1730088000000,"showTitleType":true,"size":0,"source":"sec_us","summary":"Form 8-K - Current report","symbol":"NPK","title":"Form 8-K - Current report","titleType":"重要事件披露","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/80172/000143774924032289/0001437749-24-032289-index.htm","us_notice_code":"Form 8-K","us_title_en":"Item 2.02: Results of Operations and Financial Condition;\nItem 9.01: Financial Statements and Exhibits","is_important":0,"hasEarnInfos":false,"gpt_zh_title":"","gpt_en_title":"","attachments":[{"description":"EXHIBIT 99.1","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/80172/000143774924032289/ex_738441.htm","primary":true,"translateUrl":"","linkName":"ex_738441.htm","type":"EX-99.1","id":"NTFILEFxs7JkvGfUfvYWaZ","market":"us","size":23424},{"description":"FORM 8-K","seq":2,"linkUrl":"https://www.sec.gov/Archives/edgar/data/80172/000143774924032289/npk20241028_8k.htm","primary":false,"translateUrl":"","linkName":"npk20241028_8k.htm","type":"8-K","id":"NTFILEvnk4s5wSpD4Ae2XU","market":"us","size":27405}],"type_name":"交易披露","type_name_en":"Transaction Related","titleTypeEn":"Major Issues Report","us_type":"usAnnouncement","us_type_zh":"交易披露","earn_infos":[],"event_type":"important_notice","event_name":"重要事件披露","pubTime":"2024-10-28 12:00","pubTimestamp":1730088000,"title_zh":"Form 8-K - Current report","summary_en":"Item 2.02: Results of Operations and Financial Condition;\nItem 9.01: Financial Statements and Exhibits","summary_zh":"项目2.02：经营业绩和财务状况；项目9.01：财务报表和附件","notice_type":"","filling_tag":"","gpt_icon":0},{"cdn_pdf":false,"hasAttachments":true,"id":"18675206","market":"us","labels":[],"media":"sec.gov","original_id":"AN143774924030445-NPK","pdf_url":"","pub_time":1727899591000,"showTitleType":true,"size":0,"source":"sec_us","summary":"Form 8-K - Current report","symbol":"NPK","title":"Form 8-K - Current report","titleType":"重要事件披露","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/80172/0001437749-24-030445-index.html","us_notice_code":"Form 8-K","us_title_en":"Item 8.01: Other Events;\nItem 9.01: Financial Statements and Exhibits","is_important":0,"hasEarnInfos":false,"gpt_zh_title":"","gpt_en_title":"","attachments":[{"description":"EXHIBIT 99.1","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/80172/000143774924030445/ex_728878.htm","primary":true,"translateUrl":"","linkName":"ex_728878.htm","type":"EX-99.1","id":"NTFILE9ER29xoZxgeijkLK","market":"us","size":4750},{"description":"FORM 8-K","seq":2,"linkUrl":"https://www.sec.gov/Archives/edgar/data/80172/000143774924030445/npk20241001_8k.htm","primary":false,"translateUrl":"","linkName":"npk20241001_8k.htm","type":"8-K","id":"NTFILE4kovP2VR7CBvKdP1","market":"us","size":29118}],"type_name":"交易披露","type_name_en":"Transaction Related","titleTypeEn":"Major Issues Report","us_type":"usAnnouncement","us_type_zh":"交易披露","earn_infos":[],"event_type":"important_notice","event_name":"重要事件披露","pubTime":"2024-10-03 04:06","pubTimestamp":1727899591,"title_zh":"Form 8-K - Current report","summary_en":"Item 8.01: Other Events;\nItem 9.01: Financial Statements and Exhibits","summary_zh":"项目8.01：其他事件；项目9.01：财务报表和附件","notice_type":"","filling_tag":"","gpt_icon":0},{"cdn_pdf":false,"hasAttachments":true,"id":"18522978","market":"us","labels":[],"media":"sec.gov","original_id":"AN143774924027760-NPK","pdf_url":"","pub_time":1724644800000,"showTitleType":true,"size":0,"source":"sec_us","summary":"Form 8-K - Current report","symbol":"NPK","title":"Form 8-K - Current report","titleType":"重要事件披露","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/80172/000143774924027760/0001437749-24-027760-index.htm","us_notice_code":"Form 8-K","us_title_en":"Item 8.01: Other Events;\nItem 9.01: Financial Statements and Exhibits","is_important":0,"hasEarnInfos":false,"gpt_zh_title":"","gpt_en_title":"","attachments":[{"description":"EXHIBIT 99.1","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/80172/000143774924027760/ex_717668.htm","primary":true,"translateUrl":"","linkName":"ex_717668.htm","type":"EX-99.1","id":"NTFILE73Aah8siV1kRG14f","market":"us","size":4714},{"description":"FORM 8-K","seq":2,"linkUrl":"https://www.sec.gov/Archives/edgar/data/80172/000143774924027760/npk20240822_8k.htm","primary":false,"translateUrl":"","linkName":"npk20240822_8k.htm","type":"8-K","id":"NTFILEN5mR3y5KEaGGUxJs","market":"us","size":27709}],"type_name":"交易披露","type_name_en":"Transaction Related","titleTypeEn":"Major Issues Report","us_type":"usAnnouncement","us_type_zh":"交易披露","earn_infos":[],"event_type":"important_notice","event_name":"重要事件披露","pubTime":"2024-08-26 12:00","pubTimestamp":1724644800,"title_zh":"Form 8-K - Current report","summary_en":"Item 8.01: Other Events;\nItem 9.01: Financial Statements and Exhibits","summary_zh":"项目8.01：其他事件；项目9.01：财务报表和附件","notice_type":"","filling_tag":"","gpt_icon":0},{"cdn_pdf":false,"hasAttachments":true,"id":"18450117","market":"us","labels":[],"media":"sec.gov","original_id":"AN143774924025857-NPK","pdf_url":"","pub_time":1723176000000,"showTitleType":true,"size":0,"source":"sec_us","summary":"Form 10-Q - Quarterly report [Sections 13 or 15(d)]","symbol":"NPK","title":"Form 10-Q - Quarterly report [Sections 13 or 15(d)]","titleType":"季度报告","type":"usFinancials","url":"https://www.sec.gov/Archives/edgar/data/80172/000143774924025857/0001437749-24-025857-index.htm","us_notice_code":"Form 10-Q","us_title_en":"Form 10-Q - Quarterly report [Sections 13 or 15(d)]","is_important":0,"hasEarnInfos":false,"gpt_zh_title":"","gpt_en_title":"","attachments":[{"description":"FORM 10-Q","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/80172/000143774924025857/npk20240630_10q.htm","primary":true,"translateUrl":"","linkName":"npk20240630_10q.htm","type":"10-Q","id":"NTFILE49L4ASaBSsixzUuL","market":"us","size":730454},{"description":"EXHIBIT 31.1","seq":2,"linkUrl":"https://www.sec.gov/Archives/edgar/data/80172/000143774924025857/ex_684166.htm","primary":false,"translateUrl":"","linkName":"ex_684166.htm","type":"EX-31.1","id":"NTFILECbgXFRhKtms75aD4","market":"us","size":10567},{"description":"EXHIBIT 31.2","seq":3,"linkUrl":"https://www.sec.gov/Archives/edgar/data/80172/000143774924025857/ex_684167.htm","primary":false,"translateUrl":"","linkName":"ex_684167.htm","type":"EX-31.2","id":"NTFILEBj3hAegRQMf8epAP","market":"us","size":10752},{"description":"EXHIBIT 32.1","seq":4,"linkUrl":"https://www.sec.gov/Archives/edgar/data/80172/000143774924025857/ex_684168.htm","primary":false,"translateUrl":"","linkName":"ex_684168.htm","type":"EX-32.1","id":"NTFILE9Voxh8jRLtW4yLjE","market":"us","size":5180},{"description":"EXHIBIT 32.2","seq":5,"linkUrl":"https://www.sec.gov/Archives/edgar/data/80172/000143774924025857/ex_684169.htm","primary":false,"translateUrl":"","linkName":"ex_684169.htm","type":"EX-32.2","id":"NTFILE9CTuaFNJH8La47PX","market":"us","size":5221}],"type_name":"财务报告","type_name_en":"Financial Report","titleTypeEn":"Quarterly Report","us_type":"usFinancials","us_type_zh":"财务报告","earn_infos":[],"event_type":"important_notice","event_name":"季度报告","pubTime":"2024-08-09 12:00","pubTimestamp":1723176000,"title_zh":"Form 10-Q - Quarterly report [Sections 13 or 15(d","summary_en":"","summary_zh":"","notice_type":"","filling_tag":"","gpt_icon":0},{"cdn_pdf":false,"hasAttachments":true,"id":"18450099","market":"us","labels":[],"media":"sec.gov","original_id":"AN143774924024325-NPK","pdf_url":"","pub_time":1722484800000,"showTitleType":true,"size":0,"source":"sec_us","summary":"Form 8-K - Current report","symbol":"NPK","title":"Form 8-K - Current report","titleType":"重要事件披露","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/80172/000143774924024325/0001437749-24-024325-index.htm","us_notice_code":"Form 8-K","us_title_en":"Item 2.02: Results of Operations and Financial Condition;\nItem 9.01: Financial Statements and Exhibits","is_important":0,"hasEarnInfos":false,"gpt_zh_title":"","gpt_en_title":"","attachments":[{"description":"EXHIBIT 99.1","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/80172/000143774924024325/ex_706927.htm","primary":true,"translateUrl":"","linkName":"ex_706927.htm","type":"EX-99.1","id":"NTFILE9LNTECeECeFR6ja8","market":"us","size":23585},{"description":"FORM 8-K","seq":2,"linkUrl":"https://www.sec.gov/Archives/edgar/data/80172/000143774924024325/npk20240801_8k.htm","primary":false,"translateUrl":"","linkName":"npk20240801_8k.htm","type":"8-K","id":"NTFILECpgZG4MQuPr9JUu1","market":"us","size":25896}],"type_name":"交易披露","type_name_en":"Transaction Related","titleTypeEn":"Major Issues Report","us_type":"usAnnouncement","us_type_zh":"交易披露","earn_infos":[],"event_type":"important_notice","event_name":"重要事件披露","pubTime":"2024-08-01 12:00","pubTimestamp":1722484800,"title_zh":"Form 8-K - Current report","summary_en":"Item 2.02: Results of Operations and Financial Condition;\nItem 9.01: Financial Statements and Exhibits","summary_zh":"项目2.02：经营业绩和财务状况；项目9.01：财务报表和附件","notice_type":"","filling_tag":"","gpt_icon":0},{"cdn_pdf":false,"hasAttachments":true,"id":"18185475","market":"us","labels":[],"media":"sec.gov","original_id":"AN143774924018141-NPK","pdf_url":"","pub_time":1716436800000,"showTitleType":true,"size":0,"source":"sec_us","summary":"Form 8-K - Current report","symbol":"NPK","title":"Form 8-K - Current report","titleType":"重要事件披露","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/80172/000143774924018141/0001437749-24-018141-index.htm","us_notice_code":"Form 8-K","us_title_en":"Item 5.07: Submission of Matters to a Vote of Security Holders;\nItem 8.01: Other Events;\nItem 9.01: Financial Statements and Exhibits","is_important":0,"hasEarnInfos":false,"gpt_zh_title":null,"gpt_en_title":null,"attachments":[{"description":"EXHIBIT 99.1","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/80172/000143774924018141/ex_678597.htm","primary":true,"translateUrl":"","linkName":"ex_678597.htm","type":"EX-99.1","id":"NTFILEFYaMUmJe7EDZQskT","market":"us","size":9775},{"description":"FORM 8-K","seq":2,"linkUrl":"https://www.sec.gov/Archives/edgar/data/80172/000143774924018141/npk20240522_8k.htm","primary":false,"translateUrl":"","linkName":"npk20240522_8k.htm","type":"8-K","id":"NTFILE56BoAwPKdeGtkQoh","market":"us","size":35964}],"type_name":"交易披露","type_name_en":"Transaction Related","titleTypeEn":"Major Issues Report","us_type":"usAnnouncement","us_type_zh":"交易披露","earn_infos":[],"event_type":"important_notice","event_name":"重要事件披露","pubTime":"2024-05-23 12:00","pubTimestamp":1716436800,"title_zh":"Form 8-K - Current report","summary_en":"Item 5.07: Submission of Matters to a Vote of Security Holders;\nItem 8.01: Other Events;\nItem 9.01: Financial Statements and Exhibits","summary_zh":"第5.07项：将事项提交证券持有人表决；项目8.01：其他活动；项目9.01：财务报表和附件","notice_type":"","filling_tag":"","gpt_icon":0},{"cdn_pdf":false,"hasAttachments":true,"id":"18150319","market":"us","labels":[],"media":"sec.gov","original_id":"AN143774924017079-NPK","pdf_url":"","pub_time":1715804632000,"showTitleType":true,"size":0,"source":"sec_us","summary":"Form 8-K - Current report","symbol":"NPK","title":"Form 8-K - Current report","titleType":"重要事件披露","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/80172/0001437749-24-017079-index.html","us_notice_code":"Form 8-K","us_title_en":"Item 8.01: Other Events;\nItem 9.01: Financial Statements and Exhibits","is_important":0,"hasEarnInfos":false,"gpt_zh_title":null,"gpt_en_title":null,"attachments":[{"description":"EXHIBIT 99.1","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/80172/000143774924017079/ex_675067.htm","primary":true,"translateUrl":"","linkName":"ex_675067.htm","type":"EX-99.1","id":"NTFILE3N7BuPjcPdrQ1bmp","market":"us","size":5986},{"description":"FORM 8-K","seq":2,"linkUrl":"https://www.sec.gov/Archives/edgar/data/80172/000143774924017079/npk20240515_8k.htm","primary":false,"translateUrl":"","linkName":"npk20240515_8k.htm","type":"8-K","id":"NTFILE7d83TuvqMNwDCy7C","market":"us","size":25826}],"type_name":"交易披露","type_name_en":"Transaction Related","titleTypeEn":"Major Issues Report","us_type":"usAnnouncement","us_type_zh":"交易披露","earn_infos":[],"event_type":"important_notice","event_name":"重要事件披露","pubTime":"2024-05-16 04:23","pubTimestamp":1715804632,"title_zh":"Form 8-K - Current report","summary_en":"Item 8.01: Other Events;\nItem 9.01: Financial Statements and Exhibits","summary_zh":"项目8.01：其他活动；项目9.01：财务报表和附件","notice_type":"","filling_tag":"","gpt_icon":0},{"cdn_pdf":false,"hasAttachments":true,"id":"18129878","market":"us","labels":[],"media":"sec.gov","original_id":"AN143774924016001-NPK","pdf_url":"","pub_time":1715313600000,"showTitleType":true,"size":0,"source":"sec_us","summary":"Form 10-Q - Quarterly report [Sections 13 or 15(d)]","symbol":"NPK","title":"Form 10-Q - Quarterly report [Sections 13 or 15(d)]","titleType":"季度报告","type":"usFinancials","url":"https://www.sec.gov/Archives/edgar/data/80172/000143774924016001/0001437749-24-016001-index.htm","us_notice_code":"Form 10-Q","us_title_en":"Form 10-Q - Quarterly report [Sections 13 or 15(d)]","is_important":0,"hasEarnInfos":false,"gpt_zh_title":null,"gpt_en_title":null,"attachments":[{"description":"FORM 10-Q","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/80172/000143774924016001/npk20240408_10q.htm","primary":true,"translateUrl":"","linkName":"npk20240408_10q.htm","type":"10-Q","id":"NTFILE9RGNfddUpxmXnvP4","market":"us","size":545759},{"description":"EXHIBIT 31.1","seq":2,"linkUrl":"https://www.sec.gov/Archives/edgar/data/80172/000143774924016001/ex_650944.htm","primary":false,"translateUrl":"","linkName":"ex_650944.htm","type":"EX-31.1","id":"NTFILE3XB46XkPWBdttGwm","market":"us","size":10565},{"description":"EXHIBIT 31.2","seq":3,"linkUrl":"https://www.sec.gov/Archives/edgar/data/80172/000143774924016001/ex_650945.htm","primary":false,"translateUrl":"","linkName":"ex_650945.htm","type":"EX-31.2","id":"NTFILEBpExUwQUnEsQNkut","market":"us","size":10750},{"description":"EXHIBIT 32.1","seq":4,"linkUrl":"https://www.sec.gov/Archives/edgar/data/80172/000143774924016001/ex_650946.htm","primary":false,"translateUrl":"","linkName":"ex_650946.htm","type":"EX-32.1","id":"NTFILEFYPDfemXqTiqpKfQ","market":"us","size":5180},{"description":"EXHIBIT 32.2","seq":5,"linkUrl":"https://www.sec.gov/Archives/edgar/data/80172/000143774924016001/ex_650947.htm","primary":false,"translateUrl":"","linkName":"ex_650947.htm","type":"EX-32.2","id":"NTFILE2ngTXQTzgwZ8Beuf","market":"us","size":5221}],"type_name":"财务报告","type_name_en":"Financial Report","titleTypeEn":"Quarterly Report","us_type":"usFinancials","us_type_zh":"财务报告","earn_infos":[],"event_type":"important_notice","event_name":"季度报告","pubTime":"2024-05-10 12:00","pubTimestamp":1715313600,"title_zh":"Form 10-Q - Quarterly report [Sections 13 or 15(d","summary_en":"","summary_zh":"","notice_type":"","filling_tag":"","gpt_icon":0},{"cdn_pdf":false,"hasAttachments":true,"id":"18084620","market":"us","labels":[],"media":"sec.gov","original_id":"AN143774924013994-NPK","pdf_url":"","pub_time":1714449600000,"showTitleType":true,"size":0,"source":"sec_us","summary":"Form 8-K - Current report","symbol":"NPK","title":"Form 8-K - Current report","titleType":"重要事件披露","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/80172/000143774924013994/0001437749-24-013994-index.htm","us_notice_code":"Form 8-K","us_title_en":"Item 2.02: Results of Operations and Financial Condition;\nItem 9.01: Financial Statements and Exhibits","is_important":0,"hasEarnInfos":false,"gpt_zh_title":null,"gpt_en_title":null,"attachments":[{"description":"EXHIBIT 99.1","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/80172/000143774924013994/ex_663953.htm","primary":true,"translateUrl":"","linkName":"ex_663953.htm","type":"EX-99.1","id":"NTFILE4Pxrbw4LND3MHUFD","market":"us","size":17126},{"description":"FORM 8-K","seq":2,"linkUrl":"https://www.sec.gov/Archives/edgar/data/80172/000143774924013994/npk20240429_8k.htm","primary":false,"translateUrl":"","linkName":"npk20240429_8k.htm","type":"8-K","id":"NTFILE5Bn5NGRCCs4Mp5uc","market":"us","size":24804}],"type_name":"交易披露","type_name_en":"Transaction Related","titleTypeEn":"Major Issues Report","us_type":"usAnnouncement","us_type_zh":"交易披露","earn_infos":[],"event_type":"important_notice","event_name":"重要事件披露","pubTime":"2024-04-30 12:00","pubTimestamp":1714449600,"title_zh":"Form 8-K - Current report","summary_en":"Item 2.02: Results of Operations and Financial Condition;\nItem 9.01: Financial Statements and Exhibits","summary_zh":"第2.02项：经营成果和财务状况；项目9.01：财务报表和附件","notice_type":"","filling_tag":"","gpt_icon":0},{"cdn_pdf":false,"hasAttachments":true,"id":"17765640","market":"us","labels":[],"media":"sec.gov","original_id":"AN143774924009588-NPK","pdf_url":"","pub_time":1711512000000,"showTitleType":true,"size":0,"source":"sec_us","summary":"Form 8-K - Current report","symbol":"NPK","title":"Form 8-K - Current report","titleType":"重要事件披露","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/80172/000143774924009588/0001437749-24-009588-index.htm","us_notice_code":"Form 8-K","us_title_en":"Item 8.01: Other Events;\nItem 9.01: Financial Statements and Exhibits","is_important":0,"hasEarnInfos":false,"gpt_zh_title":null,"gpt_en_title":null,"attachments":[{"description":"EXHIBIT 99.1","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/80172/000143774924009588/ex_645938.htm","primary":true,"translateUrl":"","linkName":"ex_645938.htm","type":"EX-99.1","id":"NTFILE9Ri8gWD2DVvrQYtf","market":"us","size":4599},{"description":"FORM 8-K","seq":2,"linkUrl":"https://www.sec.gov/Archives/edgar/data/80172/000143774924009588/npk20240327_8k.htm","primary":false,"translateUrl":"","linkName":"npk20240327_8k.htm","type":"8-K","id":"NTFILEAHmuv5KimA3gBRFr","market":"us","size":26683}],"type_name":"交易披露","type_name_en":"Transaction Related","titleTypeEn":"Major Issues Report","us_type":"usAnnouncement","us_type_zh":"交易披露","earn_infos":[],"event_type":"important_notice","event_name":"重要事件披露","pubTime":"2024-03-27 12:00","pubTimestamp":1711512000,"title_zh":"Form 8-K - Current report","summary_en":"Item 8.01: Other Events;\nItem 9.01: Financial Statements and Exhibits","summary_zh":"项目8.01：其他活动；项目9.01：财务报表和附件","notice_type":"","filling_tag":"","gpt_icon":0},{"cdn_pdf":false,"hasAttachments":true,"id":"17714163","market":"us","labels":[],"media":"sec.gov","original_id":"AN143774924008099-NPK","pdf_url":"","pub_time":1710475200000,"showTitleType":true,"size":0,"source":"sec_us","summary":"Form 10-K - Annual report [Section 13 and 15(d), not S-K Item 405]","symbol":"NPK","title":"Form 10-K - Annual report [Section 13 and 15(d), not S-K Item 405]","titleType":"年度报告","type":"usFinancials","url":"https://www.sec.gov/Archives/edgar/data/80172/000143774924008099/0001437749-24-008099-index.htm","us_notice_code":"Form 10-K","us_title_en":"Form 10-K - Annual report [Section 13 and 15(d), not S-K Item 405]","is_important":0,"hasEarnInfos":false,"gpt_zh_title":null,"gpt_en_title":null,"attachments":[{"description":"FORM 10-K","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/80172/000143774924008099/npk20231231_10k.htm","primary":true,"translateUrl":"","linkName":"npk20231231_10k.htm","type":"10-K","id":"NTFILE2VxL6sAV188fFyj3","market":"us","size":1386577},{"description":"EXHIBIT 21","seq":2,"linkUrl":"https://www.sec.gov/Archives/edgar/data/80172/000143774924008099/ex_609004.htm","primary":false,"translateUrl":"","linkName":"ex_609004.htm","type":"EX-21","id":"NTFILEhaVb78fN5S44SvbL","market":"us","size":9051},{"description":"EXHIBIT 23.1","seq":3,"linkUrl":"https://www.sec.gov/Archives/edgar/data/80172/000143774924008099/ex_609005.htm","primary":false,"translateUrl":"","linkName":"ex_609005.htm","type":"EX-23.1","id":"NTFILEsevQ5gcZNbA1LAai","market":"us","size":3000},{"description":"EXHIBIT 31.1","seq":4,"linkUrl":"https://www.sec.gov/Archives/edgar/data/80172/000143774924008099/ex_609007.htm","primary":false,"translateUrl":"","linkName":"ex_609007.htm","type":"EX-31.1","id":"NTFILEHUfvv4RfT3DZxTvM","market":"us","size":10929},{"description":"EXHIBIT 31.2","seq":5,"linkUrl":"https://www.sec.gov/Archives/edgar/data/80172/000143774924008099/ex_609008.htm","primary":false,"translateUrl":"","linkName":"ex_609008.htm","type":"EX-31.2","id":"NTFILE5XP5Jg9yrfCyXmER","market":"us","size":10651},{"description":"EXHIBIT 32.1","seq":6,"linkUrl":"https://www.sec.gov/Archives/edgar/data/80172/000143774924008099/ex_609009.htm","primary":false,"translateUrl":"","linkName":"ex_609009.htm","type":"EX-32.1","id":"NTFILEHVF1ZRrRPtEMm49p","market":"us","size":5442},{"description":"EXHIBIT 32.2","seq":7,"linkUrl":"https://www.sec.gov/Archives/edgar/data/80172/000143774924008099/ex_609010.htm","primary":false,"translateUrl":"","linkName":"ex_609010.htm","type":"EX-32.2","id":"NTFILE9wjRoiAAHpYxNZJm","market":"us","size":5703},{"description":"EXHIBIT 97","seq":8,"linkUrl":"https://www.sec.gov/Archives/edgar/data/80172/000143774924008099/ex_639179.htm","primary":false,"translateUrl":"","linkName":"ex_639179.htm","type":"EX-97","id":"NTFILE8zVFLbquPPb84Z7k","market":"us","size":31472}],"type_name":"财务报告","type_name_en":"Financial Report","titleTypeEn":"Annual Report","us_type":"usFinancials","us_type_zh":"财务报告","earn_infos":[],"event_type":"important_notice","event_name":"年度报告","pubTime":"2024-03-15 12:00","pubTimestamp":1710475200,"title_zh":"Form 10-K - Annual report [Section 13 and 15(d), not S-K Item 405","summary_en":"","summary_zh":"","notice_type":"","filling_tag":"","gpt_icon":0},{"cdn_pdf":false,"hasAttachments":true,"id":"17613274","market":"us","labels":[],"media":"sec.gov","original_id":"AN143774924004826-NPK","pdf_url":"","pub_time":1708405200000,"showTitleType":true,"size":0,"source":"sec_us","summary":"Form 8-K - Current report","symbol":"NPK","title":"Form 8-K - Current report","titleType":"重要事件披露","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/80172/000143774924004826/0001437749-24-004826-index.htm","us_notice_code":"Form 8-K","us_title_en":"Item 2.02: Results of Operations and Financial Condition;\nItem 8.01: Other Events;\nItem 9.01: Financial Statements and Exhibits","is_important":0,"hasEarnInfos":false,"gpt_zh_title":null,"gpt_en_title":null,"attachments":[{"description":"EXHIBIT 99.1","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/80172/000143774924004826/ex_628176.htm","primary":true,"translateUrl":"","linkName":"ex_628176.htm","type":"EX-99.1","id":"NTFILE8JdMNg6sTx85Cfjo","market":"us","size":18448},{"description":"FORM 8-K","seq":2,"linkUrl":"https://www.sec.gov/Archives/edgar/data/80172/000143774924004826/npk20240219_8k.htm","primary":false,"translateUrl":"","linkName":"npk20240219_8k.htm","type":"8-K","id":"NTFILEhCsFESeBAHyKUUb7","market":"us","size":29712}],"type_name":"交易披露","type_name_en":"Transaction Related","titleTypeEn":"Major Issues Report","us_type":"usAnnouncement","us_type_zh":"交易披露","earn_infos":[],"event_type":"important_notice","event_name":"重要事件披露","pubTime":"2024-02-20 13:00","pubTimestamp":1708405200,"title_zh":"Form 8-K - Current report","summary_en":"Item 2.02: Results of Operations and Financial Condition;\nItem 8.01: Other Events;\nItem 9.01: Financial Statements and Exhibits","summary_zh":"第2.02项：经营成果和财务状况；项目8.01：其他活动；项目9.01：财务报表和附件","notice_type":"","filling_tag":"","gpt_icon":0},{"cdn_pdf":false,"hasAttachments":true,"id":"17594182","market":"us","labels":[],"media":"sec.gov","original_id":"AN110465924021526-NPK","pdf_url":"","pub_time":1707862181000,"showTitleType":true,"size":0,"source":"sec_us","summary":"Form SC 13G/A - Statement of acquisition of beneficial ownership by individuals: [Amend]","symbol":"NPK","title":"Form SC 13G/A - Statement of acquisition of beneficial ownership by individuals: [Amend]","titleType":"超过5%披露","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/80172/0001104659-24-021526-index.html","us_notice_code":"Form SC 13G/A","us_title_en":"Form SC 13G/A - Statement of acquisition of beneficial ownership by individuals: [Amend]","is_important":0,"hasEarnInfos":false,"gpt_zh_title":null,"gpt_en_title":null,"attachments":[{"description":"SCHEDULE 13G/A","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/80172/000110465924021526/tv01515-nationalprestoindust.htm","primary":true,"translateUrl":"","linkName":"tv01515-nationalprestoindust.htm","type":"SC 13G/A","id":"NTFILEFVCPV2MN4fntjUgg","market":"us","size":11491}],"type_name":"交易披露","type_name_en":"Transaction Related","titleTypeEn":"Beneficial Ownership Change","us_type":"usAnnouncement","us_type_zh":"交易披露","earn_infos":[],"event_type":"important_notice","event_name":"超过5%披露","pubTime":"2024-02-14 06:09","pubTimestamp":1707862181,"title_zh":"Form SC 13G/A - Statement of acquisition of beneficial ownership by individuals: [Amend","summary_en":"","summary_zh":"","notice_type":"","filling_tag":"","gpt_icon":0}],"pageSize":20,"totalPage":6,"pageCount":2,"totalSize":110,"code":"91000000","status":"200"}]}}