TM is the abbreviation of TRADEMARK. American trademarks are usually marked with TM, which does not necessarily refer to a registered trademark. R is the abbreviation of REGISTER. When used in trademarks, it means registered trademark. The Implementation Regulations of my country's Trademark Law stipulate that when using a registered trademark, you can indicate "registered trademark" or registered mark on the goods, product packaging, instructions or other attachments. . Registration marks include (Note plus ○) and (R plus ○). When using a registered mark, it should be marked on the upper right corner or lower right corner of the trademark. Therefore, TM and R are trademark marks of different countries and have no special relationship. Some domestic companies do not understand the legal provisions and blindly imitate American companies and use the TM mark on their trademarks