Grzegorz Miroslaw Kowalczyk

Press Glass SA manufactures and produces glasses. It supplies customers including window frame manufacturers, door manufacturers, fire screen glaziers, interior fit-out contractors, commercial facade manufacturers, and installers. It also supplies single tempered glass to photovoltaic panel manufacturers. The company was founded in 1991 and is headquartered in Poczesna, Poland.

Pratia SA engages in the provision of clinical trials and medical services. Its services include organization and coordination of clinical trials, laboratory facilities, ambulatory patient care and documentation. The company was founded by Anna Krystyna Rogalska and Ewa Duda on June 18, 2012 and is headquartered in Warsaw, Poland.

Part of Ferrovial SE, Mostostal Kraków SA is a construction company based in Kraków, Poland. Mostostal Kraków SA specializes in the production and assembly of steel structures, as well as mechanical assembly of industrial machines and equipment. The Polish company operates in various sectors including energy, cement, chemical, bridge, public utilities, metallurgy, industrial halls, and engineering other steel facilities. Mostostal Kraków SA offers welding of gas pipelines and provides detailed information about the company's strategy, history, and financial reports on their website. The company was founded in 1945 and Jacek Lech has been the CEO of the company since 2020.