Petróleo Brasileiro SA engages in the oil and gas exploration, production, and distribution activities. It operates through the following segments: Exploration and Production; Refining, Transportation, and Marketing; Distribution; Gas & Power; Biofuel; and Corporate. The Exploration and Production segment involves crude oil, natural gas liquids, and natural gas exploration, development, and production. The Refining, Transportation and Marketing segment involves refining, logistics, transportation, trading operations, oil products and crude oil exports and imports, and petrochemical investments. The Distribution segment refers to the distribution of oil products, ethanol, and vehicle natural gas to wholesalers and through Petrobras Distribuidora S.A., its retail network in Brazil. The Gas & Power segment includes transportation and trading of natural and liquefied natural gas, the generation and trading of electric power, and the fertilizer business. The Biofuel segment involves the production of biodiesel and its co-products, and ethanol-related activities such as equity investments, production, and trading of ethanol, sugar, and the excess electricity generated from sugarcane bagasse. The Corporate segment comprises the financing activities not attributable to other segments including corporate financial management, and central administrative overhead and actuarial expenses. The company was founded on October 3, 1953 and is headquartered in Rio de Janeiro, Brazil.