NSL Ltd is a Singapore-based investment holding company. The Company is primarily engaged in the provision of management services. The Company operates mainly in the manufacturing and sale of building materials, oil and petroleum-related products and provision of environmental services. The Company also operates in the manufacturing and selling of refractory materials and roadstone products. The Company’s segments include Precast & Prefabricated Bathroom Unit (PBU), Environmental Services and Chemicals. The Precast & PBU segment is engaged in manufacturing precast concrete components and PBU in the region. The Environmental Services segment covers the treatment and logistics services of industrial waste and wastewater from the chemical sector and oily wastewater from both land and marine transportation sectors in Singapore. The Company's geographical areas include Singapore, Malaysia, United Arab Emirates, Finland, Germany and other countries.