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 organizations of the global economic system, often considers the quality and satisfaction it offers to its custome