Companhia Siderúrgica Nacional, together with its subsidiaries, is an integrated steel producer operating in Brazil and internationally. It operates through five segments: Steel Industry, Mining, Logistics, Energy, and Cement. The company produces and sells flat and long steel products, extracts and processes iron ore, tin, limestone, and dolomite, supplies railways, port concessions, and road fleet, produces bagged and bulk cement, aggregates, and concrete, and generates and commercializes energy from renewables. Founded in 1941, it is headquartered in São Paulo, Brazil.