En-Door Polymer Additives Co.Ltd 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.With over 20 years experience in exporting, our products have gained a good reputation in global market due to their excellent quality and our competitive price, and great after-sales service. Endoor-chem.com~Site InfoWhoisTrace RouteRBL Check