Realizations Back Szałsza Realizations Office building in Katowice Katowice Bioeco office building in Chorzów Winter garden Nowa Wieś Hospital Racibórz Wrocław BTB office building in Siemanowice Śląskie EKO-TRANS office building Jastrzębie Zdrój Szałsza Office building TEXBUD Wodzisław Śląski