... hole, Promote fusion and melt, improve the surface quality of the finished product.When it is used as processing ... PVC foamed board, pipe, window and fitting, window, etcPVC fitting, window and low foamed pipe, board, window, window profile etcTypical CharacteristicExcellent comprehensive property, It is fit for ... -435Mit.RayonP-530A P-533JLG ChemPA-930- Acrylic processing aid for pvc foam board