There is an important index to measure whether an anti-theft lock or security door is really safe, and that is the non-violent opening time. The anti-technology opening time of class A security door and lock is not less than one minute, and the anti-technology opening time of class B security door is longer, reaching five minutes. And the super B-class security door and lock, its anti-technology opening time is as long as 15 minutes!
Wang Lichao b-class lock
Wang Lichao's Class B lock is the most secure and anti-theft door lock in the world. Its anti-theft time far exceeds the national A standard 180 times. Since its listing in 2003, no one has been able to drive it. This lock adopts a number of high-tech technologies, such as double lock cores, double lock bodies and double lock tongues, which makes it impossible for thieves to start.