São Martinho S.A., together with its subsidiaries, engages in the production and sale of sugar, ethanol, and other sugarcane byproducts in Brazil. The company operates through Sugar, Ethanol, Corm Ethanol, Electric Power, Real Estate Businesses, Yeast, and Other Products segment. It offers a range of raw sugar; hydrated ethanol, which is used in tanks of cars powered by ethanol; anhydrous ethanol that is used as a gasoline additive in gasoline-powered vehicles; and industrial ethanol, which is primarily used in the production of paints, cosmetics, and alcoholic beverages. The company also generates electricity from sugarcane bagasse; provides byproducts, including yeast used in animal feed; offers fusel oil used as a solvent and pure amyl ethanol; and SMartLiO, a substitute for soybean oil used in the production of biofuels, paint, and chemicals, as well as Dried Distillers Grains with Solubles, an animal nutrition for ruminants, pigs, horses, birds, fish, and pets. In addition, it is involved in the cultivation of sugarcane; development of real estate properties; import and export of goods, products, and raw materials; agricultural productions; and investment in other companies. The company was founded in 1914 and is based in São Paulo, Brazil. São Martinho S.A. is a subsidiary of LJN Participações S.A.