The steel fireproof door has excellent sealing performance. It is tightly closed, and will not leave a crack in the door to make the cold air overflow. As long as the steel fire door is pushed open by hand, it will automatically close quietly, and will not produce a collision sound like the internal and external door opening, thus creating a quiet environment.

ZHTdoors kofofin wuta, shekaru 31 na ƙwarewar samarwa a cikin kofofin wuta da Windows. Babban UL wuta kofofin, EN wuta kofofin, BS EN wuta kofofin, da dai sauransu,.Muna da certification.ZHTdoors goyon bayan OEM da free design.Our abũbuwan amfãni: kyau quality, factory farashin, mai kyau service.Barka da tuntubar mu.