First, see if the sewing trademark on the clothes has been removed and whether the stitches have been sewn again.

Second: see if the item number of the clothes tag is the same as that in the clothes pocket.

Third, see if the price tag of the clothes is marked with the same color as the article number, composition and place of origin.

Fourth: Look at whether the letters on the zipper or buttons of clothes are spelled the same, and whether each brand has its own logo.