Why do bath owners in bath centers always sell things like beating salt, beating milk and rubbing mud?

The master of rubbing bath first belongs to the staff of bath center and also belongs to the sales industry. Masseurs constantly recommend their products to make consumers feel more at ease. More importantly, every product they sell is equal to their commission and service commission. Therefore, bath owners actively promote these products, which can not only serve customers better, but also increase their income, killing two birds with one stone. I hope my answer is helpful to you. Interested parties can call for advice.