What Should We Consider before Replacing Locks?
A kind of lock cylinder can't be used universally for different doors. For example, the A class locks can't be used for the B class locks of anti-theft doors. In the same way, the B class locks also cannot be applied to the C class locks of anti-theft doors. But some locks can be used universally. So do the vending machine locks. Now, locks of anti-theft doors and vending machines are divided into three types-A class, B class and super B class locks. When choosing locks...
