The surface treatment process of steel fire door leaf is powder spraying or PVC coating, which is a mature environmental protection process. The steel fireproof door has the characteristics of environmental protection and durability. It is very suitable for public use.

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.