One, are C-class locks safe?
C-rated locks are the highest security level locks in the residential sector, and they offer the strongest protection. Due to the internal pressure mechanism that presses against the locking pin, C-rated locks can effectively prevent forced entry, regardless of whether the lock or the door frame is damaged.
Two. How effective are C-class lock anti-theft mechanisms?

C-class locks are currently the highest security level locks. Their keys feature double-sided, double-row bulletproof slots, along with leaf-shaped or curved designs. C-class locks utilize single-sided leaf-shaped or external milled slots, with a side-column lock core. After 270 minutes of testing by law enforcement agencies, the lock core cannot be opened using any method. The compatibility rate is almost zero. If forced open with strong tools, the lock core's internal structure will be damaged, resulting in a self-locking mechanism and preventing opening.
Three. Can a locksmith with a C-class lock pick open the lock?
Theoretically, a Class C lock can prevent unauthorized opening within 270 minutes. However, this does not mean that a skilled locksmith cannot open a Class C anti-theft lock. With proper training and expertise, locksmiths can open Class C locks, although it may take more time. Therefore, the cost of opening a Class C lock is relatively high.