Lock boxes according to customer requirements, customer name can be marked on the lock body, made up of a group of locks or picture-lock. 
 Lock material: steel lock, lock, steel locks, transformers, anti-theft lock 
 Custom specification: 30,35,40,50,60 key type: plum, induction, crosses, atomic, leaves 
 1, group lock - also known as the "pass lock". Group lock according to customer requirements, a set of locks to compile a number, the number hit the side or front of the lock body, a set of locks to the preparation of a key, keys marked with the number of the lock in this group, with a key to open a group of lock to facilitate the centralized management of key. 
 PIP key lock - also known as "cluster lock." The preparation of a parent key in a set of lock managed by the main system, a parent key can open all locks in this group; within this group lock for each lock and then another preparation of a sub-key managed by the subsystem, only a sub-key to open the lock, not with the rest of the group lock between each opening. 
 Group lock or picture-lock, according to customer requirements to do password management, and after each group of locks to increase the number, alone the number of locks will increase the number of each set of locks, keys, or use the initial key.