Self-help jiaozi has a large profit margin, and jiaozi belongs to the category of stuffing catering projects. There is an old saying in the catering industry that you earn half by stuffing things into your purse. It means that the profit of jiaozi steamed stuffed bun is reduced by half. I know several brands, such as jiaozi, Xijiade jiaozi and Oriental jiaozi King. Everything is fine.