Plastic packing light weight, corrosion resistance, especially hydrofluoric acid, it is none other than the non-; porosity, low pressure drop and mass transfer unit height, the high point of the vapor, the vapor-liquid contact with the full features widely used in petroleum, chemical,The chlor-alkali gas and environmental protection industries. Material: polypropylene (PP), polyethylene (PE) reinforced polypropylene (RPP) polyvinyl chloride (PVC) chlorinated polyethylene (CPVC) the polyvinylidene perchlorethylene (the PVDE