The steel fire door is very durable. In the actual use process, the steel door is not easy to be damaged by the outside, which can protect the internal materials. The steel door frame will not deform after long-term use, and the steel fire door will not have quality problems due to frequent opening and closing.

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.