Legal analysis: catering service providers should purchase in accordance with relevant national regulations and food safety standards. According to relevant laws, catering service providers are not allowed to purchase food raw materials that do not meet food safety standards. If food producers fail to purchase according to regulations, the food safety supervision and administration department of the people's government at or above the county level shall order them to make corrections and give them a warning.

legal basis: article 55 of the food safety law of the people's Republic of China, 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. Catering service providers shall inspect the food and raw materials to be processed in the process of processing, and shall not process or use them if it is found that there are circumstances stipulated in Item 6 of Article 34 of this Law.