Yang?n kap?lar?, yang?na dayan?kl? malzemeler kullanarak yang?n?n yay?lmas?n? engeller ve mukannen bir s?cakl?kta otomatik olarak kapan?r.Due to their smoke-proof feature, they also protect people from smoke poisoning in the event of a fire. These doors, also known bey emergency exit doors,  of the fire department  fire  occupies a very large pl… Read More