Oiltek International Limited, an investment holding company, engages in the supply and provision of engineering design and commissioning of oil extraction equipment and plant in Asia, the United States, and Africa. It operates through three segments: Edible & Non-Edible Oil Refinery, Renewable Energy, and Product Sales and Trading. The company is involved in engineering, procurement, design, construction, and commissioning of edible and non-edible oil refining plants, downstream specialty products, processing plants, multi-feedstock biodiesel, enzymatic biodiesel, hydrogenated vegetable oil feedstock, winter fuel, and palm oil mill effluent biogas methane recovery plants; upgrading and retrofitting of existing facilities; and turnkey inside and outside-battery-limits infrastructure engineering, which comprises environmental solutions and integration into steam and power generation. It also engages in the sale of engineering components; and trading of specialty chemical products, as well as provision of agency and distributorship services. The company was founded in 1980 and is based in Shah Alam, Malaysia. Oiltek International Limited is a subsidiary of Koh Brothers Eco Engineering Limited.