When making customized fire doors, fire rating requirements should also be installed according to the actual situation. The fire protection rating is relatively high, and the price may also be relatively high. Fire doors are classified into three specifications, namely, Party A, Party B and Party C, with outstanding sound insulation and heat insulation performance.

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.