UL fireproof door has a fire rating of 20-120 minutes. The material of UL fireproof door leaf includes galvanized steel plate, stainless steel plate and coated steel plate, which can be used as single leaf/double leaf door.

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.