Chitosan oligosaccharide has outstandingadvantages than chitin and chitosan. Absorption rate of chitosan oligosaccharide in human body is nearly 100% and its biological activity and function are tens of times that of chitosan. Thus, the daily intake for maintaining human health is greatly decreased

　　The chitosan oligosaccharide of our company is refined with biological technology and the enzymolysis is done according to requirement of the organism. Beside high biological activity and good effect, this manufacturing method avoids outgrowth and injurant residue caused by chemical production means. 

　　It's proved that chitosan oligosaccharide is of the functions of improving immunity, restraining growing of cancer cells, accelerating forming of antibody in liver and spleen, stimulating assimilation of calcium and minerals, proliferating sanative bacteria like bifidobacterium and lactic acid bacteria, decreasing blood fat, blood pressure and blood sugar, adjusting cholesterin, losing weight and preventing adult illness etc. Applicable in medicine and functional food field etc. 
Chitosan oligosaccharide can obviously eliminate oxygen anion free radical, activate cells of the organism, postpone aging, restrain growing of bad bacteria on skin surface and moisturize. It's a kind of basic raw material in daily chemical field.