Dezhou Hongkun Polymer Additives Co., Ltd, as a member of Hongkun Group, is the leading producer and supplier of polymer additives in China. Our headquarters and sales center are located in Qingdao City, Shandong, with the manufacturing center located in Dezhou City, Shandong, and having R&D center in Sichuan University. Since established from 2003, Hongkun has been dedicated to the polymer additives’ research, development, manufacturing and application, providing to plenty of important global polymer producers with our stable and thorough solution to weathering endurance. Leading by GRANDSORB light stabilizers, Hongkun’s products have been supplying to European, American, Japanese, Korean markets, and keeping an outstanding reputation in the industry.