The fireproof door lock is required to open the door quickly and conveniently, so there is no lock cylinder. The fireproof door lock structure is firm, durable and reliable, and is applicable to any emergency exit, emergency passage, etc. When there is danger, it can increase the flow of people through time and evacuate people in time.

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.