IRPC Public Co., Ltd. engages in petroleum and petrochemical business. It operates through the following segments: Petroleum Products, Petrochemical Products, and Other Business. The Petroleum Products segment offers refinery oil, lubricant oil and asphalt. The Petrochemical Products segment produces olefins, aromatics and related products. The Other Business segment refers to power plant, jetty, and utilities. The company was founded on August 3, 1978 and is headquartered in Chatuchak, Thailand.