IRPC Public Company Limited or simply IRPC is a Thai Public SET-listed Petroleum and Petrochemical company. It is a subsidiary of PTT Group, formerly Thai Petrochemical Industry Public Company Limited or "TPI", which was founded in 1978 by the Leophairatana family. The company started producing plastic pellets for sale in 1982 and expanded the product line of various types of plastic resin products, including expanding factories and building infrastructure for the complete petrochemical industry. The company later faced a financial crisis after the Thai baht floating in 1997 and the company entered the rehabilitation process in 2000 and was successful in business rehabilitation on April 26, 2006. IRPC is company based in Mueang Rayong District, Rayong Province, Thailand. Wikipedia