R is the mark of "registered trademark", which means that the trademark has applied for registration in the State Trademark Office, and has been examined and approved by the Trademark Office to become a registered trademark. R in the circle is the initial letter of English register registration. Registered trademarks have the characteristics of exclusiveness, exclusiveness and uniqueness. It belongs to the registered trademark owner and is protected by law. Without the permission or authorization of the registered trademark owner, no enterprise or individual may use it, otherwise it will bear tort liability. TM is the abbreviation of English trademark, which translates into business mark, that is, trademark. That is, words, graphics or symbols marked with TM are trademarks, but they may not be registered (unregistered ones are not protected by law). In China, TM on trademarks also has its special meaning, and its TM logo does not protect trademarks. Unlike R, TM means that the trademark has been applied to the State Trademark Office, and it also means that the trademark has been applied first in the process of examination. China adopts the principle of prior application. Hope to adopt, thank you.