It’s a trademark

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 refers to registered trademarks.

The implementation regulations of my country’s Trademark Law stipulate that when using registered trademarks, "Registered trademark" or registered mark may be indicated on the product, product packaging, instructions or other attachments. Registration

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 trademarks of different countries and have no special relationship. There are also some domestic companies who do not understand the legal provisions and blindly imitate American companies. , use the TM mark on the trademark.