as medicine's raw material, it can promote the synthesis of mucopolysaccharides, advance the viscosity of synovia, and improve the metabolism of arthroidal cartilage with evident effect of relieving inflmmation and easing pain pharmaceutical:the product,as kind of raw material medicine ,is abstracted from natural chitin ,and it can be used to produce some medicine curling rheumatism arthritis ,ulcer ,gut disease, and synthesis new soluting anti-cancer medicine having effect. on black cancer ,lung cancer, gut cancer, kinney cancer,etc. healthy product: lower cholesterin, blood pressure. foodstuff : used as food ingredients and additives. so it is very popular in the international market.