1. The door frame is formed and bent at one time, with good overall rigidity and difficulty in deformation;

2. The surface of the door leaf has no solder joint structure and is filled with green environmentally friendly fire-proof materials;

3. Purpose location: use for evacuation escape routes and emergency exits.

Hardware features:

1. Equipped with escape devices, taking into account security and emergency evacuation needs, and the outer handle key can be opened from outside the door;

2. Fireproof windows can be optional for easy evacuation.