Where a company changes its trademark address, it shall submit an application for change to the Trademark Office. If approved by the Trademark Office, a corresponding certificate shall be issued to the trademark registrant and announced; If it is not approved, it shall notify the applicant in writing and explain the reasons. Where the name or address of a trademark registrant is changed, the trademark registrant shall change all its registered trademarks together; If it is not changed at the same time, the Trademark Office shall notify it to make corrections within a time limit; If it fails to make corrections within the time limit, it shall be deemed as abandoning the application for change, and the Trademark Office shall notify the applicant in writing. Article 30 of the Regulations on the Implementation of the Trademark Law of People's Republic of China (PRC).