... , Standard:USP32 EP6.0 3, ISO9001:2008 Certificate 4, Packing:25kg/drum High Quality Cow Chondroitin Sulfate1, Specs:85%,90%95%,etc2, Standard ... glucuronic acid). It is usually found attached to proteins as part of a proteoglycan. A chondroitin chain can have over 100 ... is srnutrachem02. My phone No.is 86-532-82867587,89895996 High Quality Cow Chondroitin Sulfate