(GB 21556-2008), according to the provisions of the current national compulsory safety standard (GB 21556-2008), according to the anti-theft performance (pry, drill, technology, etc.) is divided into high protection level (A) and general protection level (B) Level, these two security levels. As for the super-B and C-level, it is based on the above-mentioned national standards, the development of the relevant parameters higher than the above two standards of enterprise standards or local standards and derived from the level.
(GA / T73-1994) according to the general technical conditions (GA / T73-1994) of the Ministry of Public Security, according to the anti-tamper, anti-violence, anti-technology to open the time to divide, there are two levels, respectively, the general protection level (A) and high protection level );
Lock the level of the problem, I did not answer the first time. Should be so divided, the current national standards, the level of the cylinder there are two ways to divide
