Cationic groups of chitin were dissolved in an acidic chitosan solution formed in the positively charged amino group-containing (an NH2.) Chitin specification, having a basic, salts may be generated in the reaction of chitin gastric acid, can enteral PH value toward the alkaline side, improve acidic. Reaction generates positively charged cationic group, which is the nature of existence and uniqueness of positive charge edible food fibers. A gram of chitosan was dissolved after the gel state, with a strong adsorption capacity. Because chitin molecules containing hydroxyl, amino and the like polar groups, very hygroscopic chitin pictures, can be used as cosmetic humectant. Chitin is a natural cellulose (animal dietary fiber), no toxicity and side effects, safety and sugar approximation. (Sugar lethal dose 18g / kg, while chitin is 16g / kg). Can chelate heavy metal ions, as the body of heavy metal ions excreted agents. Chitin specifications, Shanghai chitin, Marvell Marvell biotechnology provided by Shouguang Biotechnology Limited. Shouguang Maiwei Biotechnology Limited (www.maiweishengwu.com) strong, credible, Shandong Weifang biological fertilizer industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Marvell biotechnology and you work into the brilliant, for a better future!