According to the "Trademark Law of the People's Republic of China": "Enterprises, institutions and individual industrial and commercial persons need to obtain exclusive rights to trademarks for the goods they produce, manufacture, process, select or distribute. "You should apply for trademark registration with the Trademark Office." This means that it is entirely up to the user to decide whether to use a trademark and whether to obtain exclusive rights for the trademark used, that is, the "voluntary registration principle" (for tobacco products and human medicines). Both products must use registered trademarks, otherwise they will not be sold in the market). However, if you use an unregistered trademark, you cannot enjoy the exclusive rights granted by the Trademark Law, nor can you prohibit others from using the same trademark; if the unregistered trademark conflicts with the prior rights trademark, it may also cause trademark infringement. Whether to use trademarks or registered trademarks on services is the same as product trademarks.