One is what you said. Check with the Trademark Office. Among them, there are 60 Chinese trademarks (or numbers), 0/00 English trademarks (or prefixes)/kloc and 0/20 graphic trademarks. If it is urgent, the cost will be more.

The other is your own query on China Trademark Network, that is, official website, including comprehensive query and approximate query.

The third is to ask the agent. Generally, if you choose to find an agent to register a trademark, trademark inquiry is free. Search xxxx, click on the trademark query, submit the trademark name and business scope, and give you a suggestion of registration through the professional query of the trademark Commissioner (if feasible, the success rate is high, I suggest you register; The success rate is not high, and we will propose amendments to improve the success rate of registration. If it is not feasible, customers are advised to change their names and register)