The garage fire door shall be equipped with a normally open fire door not lower than Grade B. Because it is normally kept open, it makes driving convenient, natural ventilation and lighting convenient, and the fire door will automatically close in case of fire, which has the effect of smoke separation and 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.