1. Successful experience in serving at least two canteens with more than 400 people at the same time (relevant certification materials are required). 2. Operators must have independent legal personality, hygiene license and business license, and be able to bear legal responsibilities independently. 3. All employees must hold valid health certificates. 4. The bidder must make a written commitment to purchase green and pollution-free food raw materials according to the requirements of the tenderer. 5. It has a good reputation in the past catering business, and there have been no food poisoning accidents, safety production liability accidents and debt disputes.

As mentioned above.