As a general consumer, it is difficult to judge whether a lock body is marked or not. Here is a brief explanation:
1. The side protruding tongue should be precision cast 304 stainless steel;
2. The main anti-theft tongue must be anti-saw, the hardness of the ordinary saw blade is about HRC55, the hardness of the locking tongue is higher than HRC55;
3. There should be an anti-theft test report issued by the Ministry of Public Security.