IRPC formerly Thai Petrochemical Industry Plc. (TPI), the Only Fully Integrated Refining & Petrochemical Complex in Thailand. IRPC's Modern, World Scale Production Complex is located on 2,800 acres inculding Deep sea Port, Tankfarm and Power Plant in Rayong Province. The production process starts from the refining of the crude oil all the way to the manufacturing of various types of products such as LPG, gasoline, diesel, lube base oil, ethylene, propylene including HDPE, PP, ABS/SAN, PS and EPS resins.