"TM" is commonly seen in foreign trademarks. It is the abbreviation of the English "trade mark". The Chinese meaning of "trade mark" is "commercial mark", so "TM" means "trademark". It The function is to tell people that the graphic or text marked on it is the trademark of this product or service, not a name or an advertisement. "R" is the abbreviation of "register" in English. The Chinese meaning of "register" is "registration." When goods or services are marked with this mark, it tells people that the graphics or words marked on it are not only trademarks, but also registered trademarks. It is protected by national laws and cannot be used by any other individual or organization without authorization.