In order to reassure consumers, Chongqing Municipal Market Supervision Bureau issued "Twenty Articles on Implementing the Main Responsibility of Food Safety" to regulate the production and operation of prefabricated vegetables from the aspects of production, sales and catering.

In terms of production and processing, prefabricated vegetable producers are required to strictly control the "five customs", that is, raw materials, processing, environment, personnel and inspection, and it is strictly forbidden to use expired and deteriorated raw materials, shoddy adulteration, illegal addition of preservatives, and quality and safety sources.

For the seller of prefabricated vegetables, it is required to strictly implement the temperature, humidity and hygiene requirements in the process of storage and transportation, pay special attention to the incoming inspection and sales records, prohibit the sale of prefabricated vegetables with unknown sources, and strictly control the sales process.

In the process of catering, the selection and cleaning of raw materials, cooking and processing, selection of tableware and sample retention are further standardized and emphasized.

In terms of market pricing, different online and offline sales channels are clearly marked, and it is strictly forbidden to abuse independent pricing power to raise prices at will, drive up prices and collude with each other to maintain market price stability.