The interior of the door leaf of the steel fire door is filled with a new type of environmentally friendly flame retardant and heat insulation material, which is non-toxic and harmless to the human body. It is a steel fire door with certain fire resistance composed of fireproof hardware accessories.

ZHTdoors fire doors, 31 years of production experience in fire doors and Windows. The main UL fire doors, EN fire doors,  BS EN fire doors, etc.,.We have certification.ZHTdoors support OEM and free design.Our advantages:good quality, factory price, good service.Welcome to consult us.