legal ground
Article 54 of the Food Safety Law
Food business operators shall store food in accordance with the requirements of ensuring food safety, regularly check the stored food, and promptly clean up the food that has deteriorated or exceeded its shelf life.
When storing bulk food, food business operators shall indicate the name, production date or batch number, shelf life, producer name and contact information of the food at the storage place.
Article 55
Catering service providers shall formulate and implement raw material control requirements, and shall not purchase food raw materials that do not meet food safety standards. Advocate catering service providers to open the processing process and publicize information such as food raw materials and their sources.