IRPC Public Co., Ltd. engages in the production of petrochemical and petroleum products. It operates through the following segments: Petrochemical Products, Petroleum Products, and Other Business. The Petrochemical Products segment produces olefins and aromatics, the raw materials used in the production of plastic resins. The Petroleum Products segment offers refinery oil, lubricant oil and asphalt. The Other Business segment refers to power plants and utilities. The company was founded on August 3, 1978 and is headquartered in Rayong, Thailand.