TM" is commonly seen in foreign trademarks. It is the abbreviation of the English "trade mark". The Chinese meaning of "trade mark" is "commercial mark", so "TM" means "trademark". Its The function is to tell people that the graphic or text marked on it is the trademark of the product or service, not the name or advertising, so adding TM may allow the product to show its uniqueness and other features. Design, and usually big brands will have this kind of logo. Of course, it doesn’t mean that it’s not easy to use, it’s just that they haven’t applied for the corresponding trademark.