1. First of all, make sure that the trademark of the second-hand clothing material with the trademark is the real brand trademark, not a counterfeit or pirated version.

2. Secondly, check whether the material, stitching and details of the trademarked second-hand clothing materials meet the quality standards of the brand.

3. Finally, before wearing, second-hand clothes should be cleaned and disinfected to prevent bacteria, viruses and other contaminants from affecting health.