Hiap Huat Holdings Bhd through its subsidiaries is engaged in manufacturing, recycling, and refining petroleum-based products. The company is involved in various industries, such as scheduled waste management, oil and gas, petrochemicals, and laboratory services. Geographically, it derives maximum revenue from Malaysia and also has a presence in Singapore, Italy, Hong Kong, and Vietnam. Its products include Fuel Oil, Base Oil, Petrochemicals, Lubricants, Grease, Paint, and Container.