Thai Oil Public Company Limited, together with its subsidiaries, engages in the oil refining and distributions, petrochemicals, lube base oil, and other businesses in Thailand, Indonesia, and internationally. It operates through Oil Refinery, Lube Base Oil Refinery, Aromatics and LAB, Power Generation, Solvent, Ethanol, Olefins, and Others segments. The company offers refined fuels, including gasoline, diesel/gas oil, jet fuel, kerosene, fuel oil, and liquefied petroleum gas; and lube base oil, bitumen/asphalt, by-products, and special products, such as treated distillate aromatics extract and slack wax. It also provides petrochemicals comprising paraxylene, benzene, toluene, and mixed xylenes; linear alkyl benzene, heavy alkyl benzene, and molex raffinates; and polyethylene and polypropylene resins, styrene monomer, butadiene, and olefins. In addition, the company operates natural gas-fired co-generation power plants that generate and distribute electricity, steam, industrial water, and public utilities; and develops, invests, and operates power businesses. Further, it is involved in the manufacturing and distribution of solvents and chemicals; investments in venture capital funds and startup businesses; production of ethanol; management of human resources; provision of technical support and treasury advice; design, development, and maintenance of digital services and systems; social enterprise operation support; and pipeline transportation of refined petroleum products. The company was founded in 1961 and is headquartered in Bangkok, Thailand.