Mostostal Warszawa S.A. operates in the construction industry in Poland and internationally. It operates through Industry and Energy, Infrastructure, and General Construction segments. The company also engages in the construction of residential buildings and housing development activities, office facilities and public buildings, and production halls and warehouses; and technological installations and steel structures. In addition, it constructs bridges, overpasses, and multi-level crossings, as well as underground structures, such as tunnels and underground facilities; modernizes and constructs national roads, provincial roads, express roads, and motorways; and constructs elements of municipal transport infrastructure and railway projects. Further, the company is involved in the execution and supply of equipment related to environmental protection, including turnkey energy facilities based on renewable fuels, sewage treatment plants, water treatment plants, water supply and sewage discharge networks, and de-dusting installations for heavy industry or hydro-technical facilities; and constructing energy facilities relying on fossil fuels, as well as provides design, renovation and modernization, and assembly services for energy boilers and turbo sets. Additionally, it manufactures bituminous mixtures; offers construction designs for new production capacities; and provides laboratory services for construction contracts, as well as offers equipment and transport services. The company was founded in 1945 and is headquartered in Warsaw, Poland. Mostostal Warszawa S.A. operates as a subsidiary of Acciona Construccion S.A.