En-Door Polymer Additives Co.Ltd, formerly named "Nanxing"was founded in 1987. The company is one of the largest manufacturers in China that specializes in researching, developing and manufacturing of PVC auxiliary, including PVC heat stabilizers, PVC processing aids, PVC impact modifiers and PVC lubricants etc.

Now we are cooperating with a professional CPVC pipe factory to further expand En-Door’s business. We can provide one-stop service to customers, including CPVC compounds, CPVC pipes and fittings, machineries and moulds and production technology for CPVC piping systems. We also provide export assistance for CPVC resin.

En-Door has more than 2500 employees, including two R&D centers with 156 people. It is located in the city of Yichang near the Three Gorges Dam, and it is a half an hour drive from the Yichang Airport to our factory.

Within more than 20 years of fast development, we have been given many awards such as "the State Scientific & Technical Achievement Award" and "Consumers Satisfying Products"by the government.