Shares of lithium-ion battery separator manufacturer Senior Material (06067) commenced trading today, opening sharply higher.

The stock opened at HK$12.43, representing a gain of 38.42% from its initial public offering price of HK$8.98 per share. Early session turnover exceeded HK$181 million.

The company issued 149 million shares in the offering, with a net proceeds figure of approximately HK$1.263 billion. Each board lot comprises 500 shares.

Established in 2003, the firm has over two decades of experience in the research and development, production, and sales of lithium-ion battery separators.

It is one of the first and few companies in China with the technical capability to produce dry-process, wet-process, and coated separators.

According to industry data, the company's separator shipment volume has ranked second globally for six consecutive years.

Its global market share increased from 11.0% in 2020 to 11.6% in 2025.

Within the Chinese domestic battery separator market, the group held an approximate 13.5% share in 2025, securing the second position.

By shipment volume, the company commanded about a 21.5% share of the global dry-process separator market in 2025, ranking first worldwide.

In the global wet-process separator market for the same year, it held a 9.0% share, placing fourth globally.