Legal analysis: In principle, food samples should include all processed foods, and the samples should be recorded and marked. Each sample must be marked with the product name, processing time, processing personnel and sampling time (xx, xx, xx). In other cases, the health supervision institution or catering unit may decide the sample variety by itself according to the needs.

Legal basis: Article 4 of People's Republic of China (PRC) Food Safety Law is responsible for the food safety produced and operated by them. Food producers and business operators shall engage in production and business activities in accordance with laws, regulations and food safety standards, ensure food safety, be honest and self-disciplined, be responsible to the society and the public, accept social supervision and assume social responsibilities.