On the premise of ensuring the fire protection effect, the steel fire door has the characteristics of environmental protection and durability, and is very suitable for use in public places. The steel fire door is made of cold-rolled steel plate, which is galvanized steel plate. It has good corrosion resistance, good fire protection effect, beautiful and flat surface, and good painting performance.

Deriyên agir ZHTdoors, 31 sal ezmûna hilberînê di deriyê agir û pencereyan de. Deriyên agir ên sereke yên UL, deriyên agir EN, deriyên agir BS EN, hwd.. Em xwedî sertîfîkayê ne.