For example, Times Xinwei, an evaluation agency recommended by the State Security Office, has a certificate number of DJCP20191192.
Moreover, I learned from official website of Times Xinwei that as a member of the National Technical Committee for Information Security Standardization (TC260), Times Xinwei actually presided over the compilation of the first national standard of information security management system, GB/T 197 16 Practical Rules for Information Security Management. He has participated in compiling more than ten national standards such as GB/T 197 15 Information Technology Security Management Guide and GB/T22080 Information Security Management System Requirements. It is representative in the insurance industry.
In addition, there are China Information and Communication Research Institute and Beijing Information Security Evaluation Center. For more lists of security evaluation companies, you can go to the network security level protection network-the recommended directory of the national network security level protection evaluation agency.