It is a symbol of food market access, which consists of the English prefix QS of "quality and safety" and the Chinese characters of "quality and safety". The main color of the logo is blue, the letters "Q" and "Quality and Safety" are blue and the letter "S" is white. The Measures for the Supervision and Administration of Quality and Safety of Food Production and Processing Enterprises stipulates that the food managed by the food quality and safety market access system must first obtain the food production license according to the prescribed procedures, and then the products must pass the inspection and be stamped (affixed) with the food market access mark. Food without market access signs shall not be sold. [Edit this paragraph] The market access system of time food quality and safety will be implemented. Starting from 200 1, first of all, among the five categories of food such as rice, flour, oil, soy sauce and vinegar, from May 1 2003, all five categories of food that have not obtained the food production license and have not been printed (affixed) with the QS mark will not be allowed to be sold out of the factory. In the second half of 2003, it expanded to meat products, dairy products, beverages, condiments (sugar, monosodium glutamate), instant noodles, biscuits, canned foods, frozen drinks, quick-frozen rice-flour foods, puffed foods, etc. In the near future, the food quality and safety market access system will be implemented for all foods, including the rest 13 foods. Consumers should buy food with QS logo when purchasing food that has been subject to the market access system for food quality and safety. Since 2008, all foods must be labeled with QS. For the market access of products, the general understanding is the extent to which the subject (producers and sellers of products) and object (products) of the market are allowed to enter the market. The food market access system, also known as the food quality and safety market access system, refers to the supervision system that allows producers with specified conditions to carry out production and business activities and allow food production and sales with specified conditions to ensure food quality and safety. Therefore, the implementation of food quality and safety market access system is a kind of government behavior and an administrative licensing system. The following is the classification of 28 kinds of foods that are included in the national food quality and safety market access system (QS system): food quality and safety market access system (QS system), food classification (28 kinds) 1, food processed products: wheat flour, rice, dried noodles, and other food processed products (grain processed products (sub-packaging), grain milled products (sub-packaging) and grain flour products). Oils and fats and their products: edible vegetable oil, edible oil products [edible hydrogenated oil, margarine (margarine), shortening, cocoa butter substitute], edible animal fats (lard, butter, sheep oil) 3. Seasoning: soy sauce, vinegar, monosodium glutamate, chicken essence seasoning, sauce, seasoning products 4. Meat products: meat products (pickled meat products, marinated meat products and sauced meat products) Dairy products: dairy products [liquid milk (pasteurized milk, sterilized milk and yogurt), milk powder (whole milk powder, skimmed milk powder, full-fat sweetened milk powder, flavored milk powder, special formula milk powder and bovine colostrum powder) and other dairy products (condensed milk, cream, cheese and solid molded products). Other drinking water), carbonated drinks (soft drinks), tea drinks, fruit and vegetable juices, protein drinks, solid drinks and other drinks] 7. Convenience food: convenience food (instant noodles, other convenience foods) 8. Cookies: Cookies 9. Canned food: canned food (canned food for livestock and poultry, canned food for fruits and vegetables, other canned food) 10. Sweet ice) 1 1, quick-frozen food: quick-frozen food [quick-frozen flour and rice food (raw and cooked products), quick-frozen other foods (quick-frozen meat products, quick-frozen fruit and vegetable products, quick-frozen other products)] 12, potatoes and puffed food: puffed food, potato food 13, candy products. Jelly 14, tea leaves and related products: tea leaves (tea leaves, side-selling tea), tea-containing products and substitute tea 15, alcohol: liquor, wine, fruit wine, beer, yellow wine, etc. 16, vegetable products: pickles, dried vegetables (natural dried vegetables, hot air dried vegetables)