In order to ensure the food safety of catering services, prevent food poisoning accidents, find out the causes of food poisoning accidents in time and take effective measures, according to the Food Safety Law of People's Republic of China (PRC), the Regulations for the Implementation of the Food Safety Law of People's Republic of China (PRC), the Measures for the Supervision and Administration of Food Safety of Catering Services, the Operating Rules for Food Safety of Catering Services and the Regulations for the Supervision and Administration of Food Safety of Major Event Hotels and other laws, regulations and rules.

In any of the following circumstances, the catering service provider shall keep samples of finished products for each meal.

It is also necessary to leave samples for bulk liquor inspection and keep them at a suitable temperature for 48 hours before dumping.