The "R" with a circle, that is?, is the abbreviation of "register" in English. A trademark "?" indicates that the mark is a registered trademark and enjoys the exclusive right to use the trademark. The trademark registrant has the right to indicate "registered trademark" or registered mark. According to the provisions of the Implementing Rules of the Trademark Law of the People's Republic of China: the use of registered trademarks should be marked with the words "registered trademark" or the registration mark (Note) or (R). If it is inconvenient to mark it on the product, it should be marked on the product packaging or instructions and other attachments.