Fire doors are mainly used for fire isolation at key fire protection positions. Fire doors can prevent the spread and spread of smoke and fire. Of course, fire doors also take into account the functions of ordinary doors, which are used as ordinary doors in many places.

ZHTdoors albaabbada dabka, 31 sano oo waayo-aragnimo wax soo saar ah oo albaabbada dabka iyo Daaqadaha. Albaabada dabka UL ee ugu muhiimsan, albaabada dabka EN, BS EN albaabbada dabka, iwm.