Sales of frozen foods require business licenses and food business licenses. It takes 3-5 working days to apply for a certificate. The food license is about 10 working days. The fee is 1500-2000 RMB 1. Sales of packaged frozen food need to apply for a business license in prepackaged foods. 2. Cooking and processing food belongs to the manufacture and sale of hot food in catering industry. 3. If there is a takeaway platform, you need to check the network operation. Check. Yes. Pay attention to the hygiene in the store, sink, freezer and so on. 4. The above two certificates can be handled normally without a health certificate.