Under the trademark system, it is of great significance, but it is of little legal significance in China. Circle r is the symbol of a registered trademark. Article 37 of the Regulations for the Implementation of the Trademark Law: Where a registered trademark is used, it may be marked with a "registered trademark" or a registration mark on the commodity and its packaging, instructions or other attachments. Registration marks include (note plus 0) and (r plus 0). The use of a registered trademark shall be marked in the upper right corner or the lower right corner of the trademark. Especially in the past, most people, including our trademark agency, thought that TM could only be used for trademarks after receiving the acceptance notice. But in fact, whether it is an unregistered trademark, a pending trademark or a registered trademark, tm can be marked.