Beijing May Day International Trademark Registration will give you the answer:

Hello, just choose one of them. There are tips for choosing small categories for trademark registration. First, choose the one with a larger scope. , such as clothing, and then there are many groups within a large category, such as 2501 2502. Generally, a group only needs to select one product. Selecting one can protect the entire group. There are different groups between groups, or Cross-searching is detailed in the classification table, just look at the annotations.