The use of a trademark refers to using the trademark on goods, product packaging or containers for business purposes; on services or service-related objects; on goods or service transaction documents; or The actual use of a trademark in advertising, exhibitions and other commercial activities for goods or services is sufficient to make the relevant public recognize it as a mark that distinguishes the source of the goods or services. The term "use of trademark" below only refers to use in the sense of trademark law, that is, "legal use of trademark". If the trademark is black and white when it is registered, the color can be changed at will during use after the trademark is successfully registered, but the font and shape cannot be changed. After modification, the trademark will be used irregularly and will not be protected by law.