PTT Public Co., Ltd. engages in exploration and production, liquefied natural gas, petrochemical and refining, oil and retail, power and utilities, coal, and service businesses. It operates through the following segments: Petroleum Exploration and Production, Natural Gas, Oil and Retail, International Trading, Petrochemical and Refining, New Business and Sustainability Group, and Others. The Petroleum Exploration and Production segment conducts petroleum exploration and production business both domestically and overseas. The Natural Gas segment includes procurement, natural gas pipeline transmission, distribution, and natural gas separation. The Oil and Retail segment markets petroleum products and lube oil in both domestic and overseas markets under an efficient operating system of procurement, storage, and distribution of products as well as the retail business at service stations. The International Trading segment focuses on international trading business including the import and export of petroleum and petrochemical products as well as other related products. The Petrochemical and Refining segment distribute petroleum and petrochemicals products in both domestic and overseas markets. The New Business and Sustainability Group segment develop new businesses involving nonhydrocarbons sectors alongside the sustainability management of the group. The company was founded on December 29, 1978 and is headquartered in Bangkok, Thailand.