This S-shaped mark is a food safety certification mark, which means that the production factory has passed the health and safety certification of the relevant state departments, and the food produced meets the safety and hygiene requirements of food production. Without this logo, there is no product.

According to the Announcement of the General Administration of Quality Supervision, Inspection and Quarantine (Announcement No.34 No.20 20 10/0 of the General Administration of Quality Supervision, Inspection and Quarantine), the enterprise food production license mark is expressed by the abbreviation "QS" of "enterprise food production license" pinyin "QiyeshipinShengchanxuke" and marked with the word "production license" in Chinese.