Food and beverage outlets need a food and beverage license. Without a food and beverage license, you can't open a food and beverage outlet. If it is a mobile stall, it will generally apply for a vendor card. This Shanghai has a vendor license.
Whether there are food safety problems can be checked according to law, not just unclean problems. For example, many people steal poppy shells, which does not affect the cleanliness of food, but it is a drug, so it will be sentenced.
A fine of 50,000 yuan is not a fine for operating without a license, nor is it a fine for unclean snacks. This amount is at least a combination of several crimes, which means there are many problems.
Food safety fines are based on the Food Safety Law. Look at the food safety law first.