1. If you first entrust a trademark agency to act as an agent, you must provide a power of attorney stamped with the applicant's seal. Applicants from outside mainland China who want to apply for trademark changes in China must entrust a trademark agency to do so.

2. Secondly, "Application Form to Change the Name of the Trademark Registrant" or "Application Form to Change the Address of the Trademark Registrant" or "Application Form to Change Other Registration Matters of the Trademark": If an agency is entrusted to apply for the change, it shall be prepared by the agency .

3. Final supporting materials: supporting materials for changing the name of the trademark registrant or other proof of change.