Sundow Polymers Co. Ltd. is a high-tech chemical company that is focused on R&D, manufacturing and marketing of chlorinated polymers. It is one of the industrial pioneers and leaders of Chlorinated Polyethylene (CPE) and Chlorinated Polyvinyl Chloride (CPVC) in China. It has been in the R&D of chlorinated polymers business over 13 years.

Sundow Polymer is located in the Yellow River delta development zone in the Shangdong Province. It has two manufacturing facilities with over 150 acres. Currently it has three main product series with an annual capacity as follows: 30,000 metric tons (MT) of CPE; 8,000MT of CPVC, and 4,500MT of dimethyl-5-sulfoisophthalate sodium salt (DMSIP).