The circle R on the trademark is the mark of "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. The R in the circle is in English The initial letters of register.
A registered trademark has the characteristics of exclusivity, exclusivity, and uniqueness. It is exclusively owned by the registered trademark owner and is protected by law. Any enterprise or individual without the permission of the registered trademark owner or You are not authorized to use it yourself, otherwise you will bear infringement liability.
TM means the trademark symbol, that is, the words, graphics or symbols marked with TM are trademarks, but they may not have been registered (unregistered not protected by law), TM is the abbreviation of English trademark