Founded in 2001 guanhaoBio has been one of the TOP3 manufacturers of chondroitin sulfate in China, our workshop and products are certified by ISO9001,GMP,HACCP,HALAL, we're producing chondroitin sulfate made from bovine, porcine, shark, chicken, we've been supplying the best quality at competitive prices worldwide. our products chondroitin sulfate, D-glucosamine, chitosan, Lauroyl arginate ethyl ester(LAE).