According to Article 3 of the "Regulations for the Implementation of the Trademark Law":

The use of a trademark refers to the use of a trademark on goods, product packaging or containers for business purposes; Use the trademark on services or service-related objects; use it on goods or service transaction documents; or use the trademark in advertising, exhibitions and other commercial activities of goods or services, which is enough to make the relevant public think that it distinguishes the source of the goods or services. Actual use of the logo.

What is referred to below as "use of trademarks" only refers to use in the sense of trademark law, that is, "legal use of trademarks."