... PE), polypropylene (PP), reinforced polypropylene (RPP), polyvinyl chloride (PVC), chloridized polyvinyl chloride (CPVC) and polyvinylidene fluoride (PVDF). ... PP Hollow Floatation Ball Packing(11) PP Raschig Ring(12)Plastic Supper intalox(13)Plastic Heilex(14 ... ball(19)HQB ring(20)Polyhedral ball Plastic random packing (Cascade ring, Pall ring, Raschig Ring, Conjugate ring, VSP ring, Intalox Saddle, ...