First: anti-theft lock is the most important part for the door. The performance of anti-theft lock is directly related to the security of the door. Anti-theft doors generally use mechanical locks and electronic locks. When selecting anti-theft locks, it should be noted that the products must be certified by the designated authority of the state. The anti-theft lock shall have the functions of anti-drilling, anti-saw, anti-crowbar, anti-pull, anti-impact and anti-technical opening. The lock used on the security door is divided into single point lock and multiple point lock. The so-called single point lock means that the lock lock locks the door through the lock point of the lock itself. ,, Multi-point locks mean that in addition to their own lock points, they also drive sub-locks to form multiple lock points and are distributed around the door frame to enhance skid proof performance. Second: Hinged The hinge is a component that connects the door and the door frame. It mainly plays the role of supporting the door body and should have a certain anti-theft function. Third: to see whether the material is thick. Fourth, the structure should be reasonable. At the same time, it is fine and the welding point is uniform and dense. ,, Fifth: When opening and locking the door, whether the lock is open flexibly. Sixth: The materials used for qualified anti-theft safety doors should meet the requirements of national standards.