Polimex-Mostostal Siedlce. 

Polimex-Mostostal S.A. operates as an engineering and construction company in Poland and internationally. The company operates through Production; Industrial Construction; Power Engineering; Infrastructure Construction; and Oil, Gas and Chemicals segments. It designs and constructs roads, bridges, railway infrastructure, and hydrotechnical structures; supervises works; and provides contract management services. The company also produces steel structures, platform gratings, and various transport pallets, as well as offers services related to steel products, such as corrosion protection of steel structures using hot-dip galvanization. In addition, it constructs production plants, warehouse halls, environmental protection facilities, office and administrative buildings, shopping centers, multiplexes, halls, and sports stadiums. Further, the company constructs storage tanks, industrial installations, terminals, and transshipment ports or fuel pipelines; manufactures furnaces and process heaters; and offers assembly and commissioning services. Additionally, it provides turnkey energy facilities in the field of air and water protection, flue gas desulfurization installations, dedusting systems, water treatment plants, and waste treatment facilities, as well as services in the galvanizing and painting of steel structures. The company was founded in 1945 and is headquartered in Warsaw, Poland.