What is the number of Zhanjiang safety certificate?

12 bit. The security card number is 12 digits, and the security card code consists of 1 digits and 12 digits, totaling 13 digits. The number 1 is the abbreviation of provinces, autonomous regions and municipalities directly under the central government. Numbers 2 to 3 are the numbers of the districts or CCYY public security organs where the security guards' certificates are issued, numbers 4 to 7 are the four-digit years when the security guards' certificates are issued, and numbers 8 to 13 are Arabic numerals, starting with 0000 1.