The super large fireproof door is very durable, and its anti wind pressure deformation ability is also very strong. The most outstanding advantage of super large fire door is that it can be opened flexibly, and has good quality and long service life.

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.