three. Yal?t?m ve Yang?n Güvenli?i: Yang?na dayan?kl? kaplamalar ve ?s? yal?t?m? sa?layan malzemeler tercih edilmelidir.Çelik Yap?, which proceeds on its way with the responsibility of doing business with the most modern and advanced companies of the worldwide financial state, constantly considers the quality and fulfillment it offers to its clie