What kind of locks for old iron gates with strips to prevent theft?

According to the official website of Yueyue Ma Lock, the locking cylinder of Yueyue Ma Lock will change the locking principle of the traditional bullet lock of the upper and lower bullet holes to the holes to interpenetrate each other to the shrapnel by the rotating angle of the change of the locking principle of the locking principle of the key by a whole type of key to lock the method to change the method of the traditional type of the bullet locking method respectively, to avoid the misalignment and the phenomenon of the liquid clogging. The lock cylinder and add a key can be twisted without setting, non-lock key inserted into the keyhole can be twisted at will 360 degrees, but the lock is not open, anti-theft effect is very good.

The Yueyue Ma lock is a patented product invented by Li Shande, the chairman of Guangdong Dartshen Anti-theft Equipment Co. The phenomenon of clogging is avoided.