There are many such things in stores. . . So be very careful and buy from big stores with good reputations. Don’t try to be cheap. If it’s a hundred or ten dollars cheaper, it’s something fishy. The wool comes from the sheep. Please understand this sentence well. If you mind, go to his store in the busy area. Find a few more people and go there on weekends when there are more people. If you don't solve the problem, you will cause trouble. This is the only way. .