TM is the abbreviation of trademark. Trademarks in the United States and other countries are usually marked with TM, indicating registered trademarks. China's "Regulations on the Implementation of the Trademark Law" stipulates that the use of registered trademarks can be marked with "registered trademarks" or registration marks on commodities, commodity packages, manuals or other accessories. Registration marks include (note plus o) and (r plus o). The use of a registered trademark shall be marked in the upper right corner or the lower right corner of the trademark. So TM and R are trademarks of different countries and have no special relationship. However, some domestic companies do not understand the legal provisions, blindly imitate American companies, and use TM marks on trademarks.

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