"TM" is common in foreign trademarks. It is the abbreviation of "trademark" in English, and "trademark" means "business mark" in Chinese, so "TM" means trademark logo. The TM logo is not unique, and it does not have this privilege, including both the registered trademark R and the direct use of unregistered trademarks registered without the approval of the Trademark Office. When the trademark has not become a registered trademark, mark "TM", which is to tell the public that this graphic or text is used as a "trademark" of goods or services, not a name or advertising, so as to prevent the graphic or text marked by it from flowing into the public domain and not being able to apply for a registered trademark and enjoying exclusive rights; Marking it with "TM" at the same time can also be used as proof of using the graphic or text as a trademark. When applying for registration of a trademark, it enjoys the right of prior use.