Shandong Haiyu Biological Co., Ltd: Chondroitin sulfate is dietary supplement, it is mainly used in health care products. It can be used for consumption and pet. We are one of the manufacturer from China since 2005, we have NSF, ISO, HACCP and HALAL certificatation. We can sign health certificate for America, Europea and European Union countries. Our product is sources from Bovine, avian, shark and pork, cpc90% and cpc95%. 25 kilogram per cardboard drum is the main packing way.