TM on the trademark is the abbreviation of English trademark, which means "trademark" in Chinese. But it doesn't mean the same as the circled R. R stands for the registered trademark. It means that it has been applied in the trademark application office, but it has not been officially passed. It can be used from application to approval. If approved, it will be circled.

TM of QQ is the abbreviation of Tencent Messenger, which is an instant messaging software created by Tencent for office workers.