The hardware fittings used on UL fire doors must also be fire-resistant. Fire doors can be opened and closed freely by hinges. The door closer can ensure that the door can be closed to the initial position accurately and timely after being opened. After installing the aligner, the rear door leaf can be closed tightly one after the other. The important part of the fire door is the escape device. In an emergency, indoor personnel can immediately escape by pushing the escape device.

ZHTdoors өрт эшиктери, өрт эшиктери жана Windows өндүрүштүк тажрыйбасы 31 жыл. Негизги UL өрт эшиктери, EN өрт эшиктери, BS EN өрт эшиктери, ж.б.,..Биз certification.ZHTdoors колдоо OEM жана акысыз design.Our артыкчылыктары бар: жакшы сапаты, фабрика баасы, жакшы service.Welcome биз менен кеңешүүгө.