Note chitosan from crab and other seafood processing more shell made of high quality raw materials for crab chitosan is pure white; in addition, chitosan process in addition to the protein needs of chitin specifications, This is affecting the purity of an important indicator of chitin chitosan, chitin protein removal endless shelf life, the color yellow, and the residual proteins may cause allergic reactions to people allergic to seafood. Chitin (Chitin) discovered in 1811 by the French scholar Brad Weifang chitin Kenobi (Braconno), 1823 Extraction from crustacean shell and named by Ogier. Its appearance is pale beige to white, nature dissolved in concentrated hydrochloric acid, phosphoric acid, sulfuric acid, etc., and other alkali-insoluble organic solvents, not soluble in water. Chitin is the only positive dietary fiber positively charged. It is widely used in industrial, medical, cosmetic and other fields. Chitin Chitin fertilizer _ _ 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!