TM is common in foreign trademarks. It is the abbreviation of English trade mark. The Chinese meaning of trade mark is commercial mark, so TM means trademark. Its function is to tell people that the graphic it marks or words are trademarks of this product or service, not a name or an advertisement. R is the abbreviation of register in English. Register in Chinese means registration. Marking goods or services with this mark tells people that the graphics or words marked on it are not only trademarks, but also registered trademarks. They are protected by national laws and cannot be registered without registration. Authorized, no other individual or organization may use it without authorization. TM is a trademark, and R is a registered trademark. They have different levels of legal protection.