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 While using the obligation of doing business with the most modern and advanced businesses of the global economy, always considers the quality and satisfaction it provides to its prospects as