... PVC, CPVC, PVDF plastic pall ring. 2.Low pressure drop, energy saving, large void space. 3.Low operation cost, reusable. Detailed ... large void space, large flux, high efficiency, energy saving, low operation cost, light in weight and reusable.They are available for stripping ... from 60 to 150 °C. They are widely used in the packing towers in petroleum, chemical, alkali chloride, coal gas industries and ...