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; International; 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 i