Nanyang gold pearl necklace has a patent number.

The patent number of Nanyang Zhu Jin Necklace is a parity bit automatically generated by the computer and given by the computer. The patent number of the patent that has been authorized, that is, the patent number on the authorization certificate issued by China National Intellectual Property Administration, is the application number in front of ZL. For example, the patent number granted by XXX is ZL2003 10 100002.