Class 5 trademarks and Class 30 trademarks cannot be used universally. Those who find category 5 to do category 30, or those who are complained of category 5 to do category 30, will be punished.

Category 5 health care products cannot be registered because Category 30 has a similar trademark, because there is a group of goods in Category 30 that are "non-medical nutrition products". This kind of goods is similar to the five kinds in nature and efficacy, which is difficult to distinguish and easy to be confused in real life. So these two categories of goods are cross-searched, that is, if one of the two categories is similar, the other category cannot be registered.