Steel fire doors can be equipped with windows, louvers, ventilation louvers, etc. as required. Fire resistance is the biggest feature of steel fire doors, do not underestimate this kind of steel fire doors.

防火門廠，鋼預懸外門,防火門1小時，金屬空心門，fireproof door,exit door price,防火門鎖，

防火金屬門供應商，鋼預懸外門，安裝防火車庫門，防火金屬門框，防火門，金屬前門，出口門價格，

緊急防火門，應急門材料，鋼預懸外門，家用防火門，公寓防火門，防火門,防火門尺寸，出口門價格