Generally, the bidding information of canteens in enterprises and schools will be published on the bidding information network. There seems to be a lot of bidding information on China Electric Power Network. If you want to open a catering company and contract the school canteen, you want to bid for the unit and find a local bidding agency, and they will tell you what to do. Generally, you need some preliminary information such as drawings and budgets, and these agents will tell you.
If you want to participate in the bidding, it depends on the contents of the bidding documents and what are the requirements of the documents. For example: staffing, business license, performance and other documents to prove their strength. Specific still need to be in accordance with the tender documents.