What does the ABC level lock cylinder of an intelligent lock mean？

The ABC level lock cylinder of an intelligent lock is a level evaluation of the safety of the lock cylinder. The "Mechanical Anti Theft Lock" standard formulated by the Ministry of Public Security only defines two levels: A level and B level, while C level (also known as super B level) is a standard defined by the industry itself. Currently, there are also so-called super C-class lock cylinders in the market.

The more complex the lock core structure, the higher the safety. The A-level lock cylinder adopts a straight or cross key, and the technical unlocking time is within 1 minute; The B-level lock cylinder adopts a flat plate type, with double row marble slots, and the unlocking time is more than 5 minutes but less than 120 minutes; The C-level lock cylinder adopts a double row, composite curve groove, with a technical unlocking time of over 270 minutes.