In addition to the functions of ordinary doors, fire doors can also prevent the spread of fire and smoke, prevent the spread of fire within a certain period of time, and ensure the evacuation of people. Fire doors are set in fire compartments, evacuation staircases, vertical shafts and other fire compartments with certain fire resistance.

ZHTdoors yong’inga qarshi eshiklar, yong’in eshiklari va derazalarida 31 yillik ishlab chiqarish tajribasi. Asosiy UL yong’in eshiklari, EN yong’in eshiklari, BS EN yong’in eshiklari va boshqalar.