Supply Chitosan powder ,Glucosamine,Deacetylation 85% 90% 95%,High DAC,Density,GMP factory with ISO9001/14001 ... certificate Chitosan powder ,4-poly-D-Glucosamine,Deacetylation Specification: Deacetylation≥ 85% 90% 95%Chemical name4-poly-D-GlucosamineAppearanceWhite powder Heavy Metal ...