... ISO9001-2008 certified Plastic Pall Ring (PP Pall Ring, Pall Ring PP) Indtroduction:Plastic pall ring is made ... chemical corrosion resistant plastics, including polyethylene (PE), polypropylene (PP), reinforced polypropylene (RPP), polyvinyl chloride (PVC), chloridized ... 'aImgSrc': aBigImageSrc } ); } )(); Plastic Pall Ring (PP Pall Ring, Pall Ring PP) Packing used in the packing towers in petroleum ...