(1) preservatives - are most commonly used sodium benzoate, potassium sorbate, sulfur dioxide, lactic acid and so on. Used in jam, preserves and other food processing. (2) anti-oxidants - and preservatives like, you can extend the shelf life of food. Are most commonly used dimension C, C and so different dimension. (3) coloring agents - commonly used synthetic pigment carmine, amaranth red, lemon yellow, indigo and so on. It can change the food's appearance to enhance the appetite. (4) thickening agent and stabilizer - may improve or stabilize the physical properties of the cold food, make food look fine lubrication. They make ice cream and other frozen foods to maintain a soft, loose organizational structure. (5) Dietary Supplement - can enhance and supplement the food of certain nutrients such as minerals and trace elements (vitamins, amino acids, inorganic salts, etc.). All kinds of infant formula milk powder to contain a variety of nutrient supplement. (6) leavening agent - some candy and chocolate to add leavening agent, sugar body produces carbon dioxide may be prompted to play the role of leavening. Commonly used are sodium bicarbonate leavening agent, ammonium bicarbonate, of leavening agent. (7) sweetener - commonly used artificial sweeteners are saccharin, sodium cyclamate and so on. Purpose is to increase the sweet feeling. (8) sour agents - some drinks, candy and other agents often used to regulate and improve the sour smell of results. Used citric acid, tartaric acid, malic acid, lactic acid. (9) Brightener - benzoyl peroxide is the main component of flour brightener. Of food in the flour add the maximum dose allowed 0.06g/kg. Brightener exceeded, will destroy the nutritional flour, produced by acid hydrolysis may cause liver damage, benzoyl peroxide and other developed countries in the EU have been banned as a food additive. (10) Spices - spices are synthesized, but also natural, flavor a lot. The various tastes of consumers eat chocolate, the production process widely used in a variety of spices to make it a unique flavor with a variety of? unique flavors.