Hiap Huat Holdings Berhad, together with its subsidiaries, manufactures, recycles, and refines petroleum-based products in Malaysia, Singapore, Vietnam, Finland, and Italy. The company offers fuel and base oils, diesel, and bitumen; mixed aromatic and alcohol solvents, as well as glycol; refined used cooking, palm acid, tyre pyrolysis, pome, and plastic pyrolysis oils, as well as refined brown grease; and recycled metal/PVC drum and IBC. It also provides scheduled waste management, including collection, treatment, and conversion of hazardous waste; liquid bulk terminal solutions and storage options for petroleum, petrochemicals, and biofuels; petroleum, petrochemical, and sustainable products refining; and laboratory and testing services. In addition, the company engages in the manufacturing, recycling, and refining of various industrial paints; leasing of machinery and equipment; and physical refining, processing, pre-treatment, recovery, reuse, and trading of waste and residues, as well as by products generated from oil palm and other oil and fats. Further, it is involved in provision of scientific or clinical advice, diagnostic testing services, dealing in all substance, apparatus, and other related services; transportation, logistics, and warehousing services; ports, harbors, and piers operation; and buying, selling, renting, and operating of self-owned or leased real estate land. The company was founded in 1985 and is headquartered in Klang, Malaysia.