Shandong Guanghao Biological Products Co., Ltd, Which founded in 2001. Is the largest enterprise in the line of chondroitin and chitosan. The company is locate in Yinan Industrial Pard and covers 53,000 square meters with 60 million RMB total investment . we have advanced equipment and workshops and Inspection & Testing center under GMP standard. Meanwhile passed ISO9001 Quality Management System in 2008 and acquired the QS cettificate in 2012, which provides a reliable guarantee for our ...