Your question should be explained like this: You can only register one trademark but you can register N categories. Take Haier, for example. Although most of its products are electrical appliances, in order to protect Haier's intellectual property rights, Haier has registered all 45 categories of trademarks. It can use this trademark in all fields. (Of course, his purpose of doing this is to protect the trademark, not to use it in all fields). Clothing and catering, as you mentioned, belong to categories 43 and 25 of the trademark classification. You can use the same trademark to register in these two categories. If you need help, you can call my classmate (she works at the Beijing Trademark Office and may be able to help you), 010-63377803. Just tell her that you are a netizen or friend of Hedgehog.