is a symbol of food market access, which consists of the English prefix QS of "Quality Safety" and the Chinese characters of "quality 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. No food market access signs, shall not be sold. [Edit this paragraph] The market access system for time food quality and safety has been implemented since 21, first in five categories of food: rice, flour, oil, soy sauce and vinegar. From May 1, 23, any food in five categories that has not obtained the Food Production License and has not been printed (affixed) with the QS mark shall not be sold out of the factory. In the second half of 23, it expanded to 1 kinds of food, such as meat products, dairy products, beverages, condiments (sugar, monosodium glutamate), instant noodles, biscuits, canned food, frozen drinks, quick-frozen rice-flour food and puffed food. In the near future, the food quality and safety market access system will be implemented for all foods including the remaining 13 categories of foods. When purchasing foods that have implemented the market access system for food quality and safety, consumers should purchase foods that have been printed (affixed) with QS marks. Since 28, 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 in order to ensure the quality and safety of food, producers with specified conditions are allowed to carry out production and business activities, and foods with specified conditions are allowed to produce and sell. Therefore, the implementation of food quality and safety market access system is a government act and an administrative licensing system. The following are the 28 categories of food 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 categories) 1. Grain processed products: wheat flour, rice, dried noodles, other grain processed products (grain processed products (sub-packaging), grain milled products (sub-packaging), and grain flour products) 2. Edible oil products [edible hydrogenated oil, margarine (margarine), shortening, cocoa butter substitute], edible animal oil (lard, butter, sheep oil) 3. Condiments: soy sauce, vinegar, monosodium glutamate, chicken essence seasoning, sauces, seasoning products 4. Meat products: meat products (cured meat products, braised pork products with sauce, smoked barbecue meat products, smoked sausage and ham. High-temperature sterilized milk, sterilized milk, yogurt), milk powder (whole milk powder, skimmed milk powder, whole milk powder with sugar, flavored milk powder, special formula milk powder, bovine colostrum powder), other dairy products (condensed milk, cream, cheese, solid molded products)], infant formula milk powder (wet process, dry process) 6. Beverage: Beverage [bottle (barrel). Fruit and vegetable juices, protein drinks, solid drinks and other drinks] 7. Convenience food: convenience food (instant noodles and other convenience foods) 8. Biscuits: biscuits 9. Canned food: canned food (canned livestock and poultry, canned fruits and vegetables, other canned food) 1. Frozen drinks: frozen drinks (ice cream, ice cream, slush, popsicles, edible ice, etc. Cooked products), quick-frozen other foods (quick-frozen meat products, quick-frozen fruit and vegetable products, quick-frozen other products)] 12. Potatoes and puffed foods: puffed foods, potato foods 13, candy products (including chocolate and chocolate products): candy products (candy, chocolate and chocolate products), jelly 14, tea leaves and related products: tea leaves (tea leaves, side-selling tea), tea-containing products and substitute tea. Rice wine and other wines 16. Vegetable products: pickles, dried vegetables (naturally dried vegetables, hot air dried vegetables, freeze-dried vegetables, vegetable chips, vegetable powder and products), edible fungi products (dried edible fungi, pickled edible fungi), other vegetable products 17. Fruit products: candied fruit, fruit products (dried fruit products, jam) 18. Roasted seeds and nuts. 19. Egg products: egg products (processed eggs, dried eggs, frozen eggs and others) 2. Cocoa and roasted coffee products: cocoa products, roasted coffee 21. Sugar: sugar (white sugar, soft sugar, brown sugar, rock sugar, cube sugar, borneol sugar, etc.) 22. Water.