Zamet S.A. is a Polish company, one of the leading manufacturers of large-size steel structures, machinery and equipment for offshore and other industries. Zamet S.A. is the parent company of the Zamet Group. In the structure of the capital group there are: Zamet Industry in Piotrków Trybunalski, Mostostal Chojnice, Zamet Budowa Maszyn in Tarnowskie Góry (world-class manufacturer of machines and devices used in the metallurgical engineering and other branches of the Industry) and Huta Zygmunt in Bytom. Zamet S.A. belongs to TDJ S.A., a Polish private investment company, which for 40 years has been active in various sectors of the economy. Zamet S.A. is listed on Warsaw Stock Exchange since Oct. 2011.