chondoritin sulfate ,we have our own factory producing n have been exporting to North America,Europe etc. Chondrotin sulfate1,Purity:85%,90%, 95%2,Origin: Bovine, Porcine, shark,chickenSPECIFICATIONS:Appearance :white to Off-white Free FlowingPowderClarity and Color of Solution : 0.35 Max at 420nmSpecific Rotation: -20.0° —-30.0°HPLC :85% Min,90% Min, 95% min(O.D.B)Loss On Drying :10% MaxPH :5.5- ...