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.

Mga pultahan sa sunog sa ZHTdoors, 31 ka tuig nga kasinatian sa produksiyon sa mga pultahan sa sunog ug Windows. Ang nag-unang 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.