The thickness of UL steel fireproof door leaf is divided into three standards, namely, A, B and C, with excellent sound insulation and heat insulation performance. The surface of UL steel fireproof door is treated by electrostatic spraying, and the vulnerable parts such as hinges, door locks, door closers are high-quality products. The switch is light and durable.

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.