Edible oil produced by a stupid oil mill with a business license and no small workshop certificate cannot be sold. Edible oil belongs to food, and the state is very strict in food safety management. To produce, process and sell food, it is necessary to have not only an industrial and commercial license, but also a hygiene license. It is ok for an oil mill without a license to produce its own edible oil, and it is illegal to sell the produced edible oil. The oil mill without a license will be banned and will be warned and fined.