If you know the trademark but not the brand, you can search in the following ways:

1. Find the brand symbol, such as logo or slogan, etc. on the trademark, and then copy it to search in the search engine , you can find the corresponding brand information.

2. Find clothes of the corresponding brand through information sources such as social media, official clothing websites, and professional clothing blogs, and then find out the brand information.

3. Consult local professional organizations or brand clothing inquiry departments to get basic information about the brand.

4. If the clothes have information such as place of origin or production date, the relevant departments can find out the basic information of the brand.

I hope the above information is helpful in answering your questions.