Petroleo Brasileiro SA Petrobras was incorporated in 1953. It began operations in 1954 and has been carrying out crude oil and natural gas production and refining activities in Brazil on behalf of the government. Its domestic oil and gas exploration and production efforts are focused on four offshore basins in Brazil: Campos, Santos, Espírito Santo and Sergipe-Alagoas. The Company operates as an integrated oil and gas company in Brazil and internationally. Its business is structured into segments such as Exploration and Production; Refining, Transportation and Marketing; Distribution; Gas and Power; Biofuel; and International. The Exploration and Production segment is engaged in the exploration, development, and production activities; sale and transfer of crude oil in domestic and foreign markets; and sale of oil products produced at natural gas processing plants. The Refining, Transportation and Marketing segment is engaged in the refining, logistics, transportation, export, and purchase of crude oil, as well as in the purchase and sale of oil products and ethanol. This segment is also engaged in the extraction and processing of shale. Its products include gasoline, diesel, and residential liquefied petroleum gas. The Gas and Power segment is engaged in the transportation and trade of natural gas; transportation and trade of liquid natural gas; generation and trade of electric power; holds interests in natural gas distribution and thermoelectric power stations; and fertilizer business. The Biofuel segment is engaged in the production of biodiesel and its co-products, as well as in the production and marketing of ethanol, sugar, and the excess electric power generated from sugarcane bagasse. The Distribution segment distributes oil products, ethanol, and compressed natural gas in Brazil. Further, the International segment is engaged in the exploration, production, refining, transportation, marketing, and distribution of gas and power in countries other than Brazil, as well as produces petrochemicals.