ZC6729808SL
6729808 is the trademark application number, ZC is registration, and SL is acceptance. It has nothing to do with patents. You can check the China Trademark Network with the application number and you can find your trademark. Registration information
Patents and trademarks are different. Patents have their own numbers and are applied for at the Patent Office of the State Intellectual Property Office, while trademarks are filed with the State Trademark Administration. They are two different things