The fire door hinge is a component connecting the door and the door frame, which mainly supports the door body and has a certain anti-theft function. Fire door hinge is a new type of hinge that can be hidden in the door body. At the same time, it has the function of normally opening and closing under the control of electromagnetic external force, and drives the door body to rotate.

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.