) Steel selection: to discriminate from the plate thickness, material, origin, etc. These related to the use of electric drills, cutting and other special tools destroyed safe afford. 2) forming and welding: Check whether the cabinet molding, check the gap between the door and the door frame, the switch is flexible, the gap is too large, the tamper function, and for fire safes, the gap is not too big allowed. 3) the traditional structure: This is the core part of the safe. Because the user can not detect key cabinets available, but it is the anti-technical open. Users can ask when buying businesses open the back door after viewing the traditional structure of the interior is sophisticated, transmission is flexible. We would also see the latch structure, the lock bolt diameter bold the best, and now the world of popular formats latch on with a good anti-open effect. 4) Lock: If the traditional structure of a surface, then the lock is the most important point, destroy locks or keys are modeled on the equivalent of undermining the anti-