1, food colorants: with food coloring for the primary purpose of food additives called Quality colorant colorant fertilizer, also known as pigment. 2, by source: food can be divided into synthetic coloring agents and natural food colorants two categories. 3, according to the structure: synthetic food coloring agents can be divided into azo colorants and non-azo colorants; 4, food and natural colorants can be divided into azoles, polyenes, ketones, quinones and polyphenols class. 5, according to the solubility of the colorant point: can be divided into fat-soluble and water-soluble. China allows the use of synthetic colorants 10 species. Natural colorants mostly vegetable-based coloring agent, not only safety. And many natural colorants have some nutritional value and physiological activity. Β- carotene colorant colorants fertilizer widely used in products such as fruit juice, vitamin A is not only original, but also has obvious anti-oxidation, anti-aging and other health functions, GB2760-2011 its inclusion in various types of food Press production needs appropriate use of food additives. For a variety of food coloring in the red yeast rice also has significant blood pressure lowering effect. With the improvement of people's awareness of food additive safety, to develop natural, nutritious and versatile natural colorants it has become the development direction of the fertilizer colorants guarantee colorant, fertilizer colorants, by the Weifang Weifang Fuyuan Fuyuan environmental technology limited company. Weifang Fuyuan Environmental Technology Limited (www.wfdafuyuan.com) (www.wfdafuyuan.com) strong, credible, Shandong Weifang other industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Weifang Fuyuan into the brilliant and you work for a better future!