The surface treatment process of the door leaf is powder spraying or PVC coating, which are mature environmental protection processes.

https://ztfiredoor.com/23658.html

front door fire proof,1 hour fire rated attic access door,derë zjarri me një panel të vetëm,fire rated doors garage entry,two way fire door,front door fire proof,dera e hyrjes me izolim zjarri,fire rated doors garage entry,24 x 24 derë hyrëse e vlerësuar me zjarr,front door fire proof,dyer sigurie nga zjarri me xham,1 hour fire rated attic access door,30 minute doors,fire rated doors garage entry,derë me zjarr për bodrum,1 hour fire rated attic access door