They all mean registered trademarks.

The R in the circle is the first letter of English register. The circle R indicates "registered trademark", which means that the trademark has been applied for registration at the National Trademark Office and has been reviewed and approved by the Trademark Office to become a registered trademark. Registered trademarks have the characteristics of exclusivity, exclusivity, and uniqueness. They are exclusively owned by the owner of the registered trademark and are protected by law. No enterprise or individual may use it without the permission or authorization of the owner of the registered trademark, otherwise they will bear infringement liability.

TM is the abbreviation of English trade mark (registered trademark), and TM means the trademark symbol. That is, the words, graphics or symbols marked with TM are trademarks, but they are not necessarily registered (unregistered ones). not protected by law). The TM mark does not protect the trademark. It is different from R. TM means that the trademark has been applied to the National Trademark Office, and the National Trademark Office has also issued a "Notice of Acceptance" and entered the opposition period. In this way This prevents others from filing duplicate applications and also means that existing trademark holders have priority to use it.