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 milango ya moto, miaka 31 ya uzoefu wa uzalishaji katika milango ya moto na Windows. Milango kuu ya moto ya UL, milango ya moto ya EN, milango ya moto ya BS EN, nk., Tuna certification.ZHTdoors msaada OEM na bure design.Our faida: ubora mzuri, bei ya kiwanda, huduma nzuri.Karibu kushauriana nasi.