NSL Ltd. is a Singapore-based company, which is engaged in the provision of management services and investment holding. The Company operates in the manufacturing and sale of building materials, oil and petroleum related products and provision of environmental services. It also operates in the manufacturing and sale of refractory materials and roadstone products. Its segments include Precast & Prefabricated Bathroom Unit (PBU), Environmental Services, Chemicals and Investment Holding & Others. The Precast & PBU segment is engaged in manufacturing precast concrete components in Singapore, Malaysia and United Arab Emirates, and PBU business is a producer in Scandinavia. The Environmental Services segment offers treatment and logistics services of hazardous industrial waste and wastewater from the chemical sector and oily wastewater from both land and marine transportation sectors. The Investment Holding & Others segment comprises of holding investments and the operation of a marina club.