... shark,bovine,porcine,chicken cartilage. Product FeatureProduct name: Chondroitin Sulphate Standard: USP/BP/EPOrigin: Bovine, Porcine, Chicken, ... Nitrogen:2.5%-3.8%; Sodium: < 5%; Heavy metals: < 20ppm. Product Specification/ModelsThe chondroitin sulphate is sealed in double-layer ... Co., Ltd. can manufacture different content of chondroitin sulphate from shark, bovine, porcine and chicken cartilage ...