How do I identify the door lock level?
The door locks are generally marked according to the type and packaging will be level, but you can also look at the style of the cylinder to determine the structure
B level is a more secure level, from the key point of view is double-sided bullets slot, such a lock if there are tools, skilled workers to open about 10 minutes.
Super B-class lock is the most secure level, from the key point of view the general double-sided bullets slot, next to a leaf or curve.
A-level is the most primitive and most insecure lock cylinder, the owner's key is flat, only single-sided single-row bullet slot, some cross-key also go to A-level, this lock as long as two or three minutes will be able to open, Faster.
Anti-theft door lock cylinder is generally divided into A-level, B-class and ultra-B-class. Anti-theft door security, in addition to the facade of the anti-theft, anti-theft door lock is also very important. Anti-theft door locks are good or bad, a direct impact on anti-theft door anti-theft function is good or bad.
