NSL Ltd. is an investment holding company, which designs, supplies, and delivers precast concrete components and prefabricated bathroom unit (PBU); and provides environmental services. It operates through the following segments: Precast & PBU, Environmental Services, and Investment Holding & Others. The Precast & PBU segment manufactures precast concrete components in Singapore, Malaysia and Dubai while the PBU business is a producer in Scandinavia. The Environmental Services segment engages in oil and chemical waste management and the distribution and supply of diesel, fuel oil, marine gas oil, lubricants and fuel management technology. The Investment Holding & Others relates to the Group's remaining assets, comprising mainly of holding investments. The company was founded on August 12, 1961 and is headquartered in Singapore.