Plastic Cage Ball,Tower Packing Ball *Plastic tower packing ball *PP,PVC,PE material *Dia.38,50mm *Light weight Plastic Cage Ball,Tower Packing Ball: Plastic cage ball has these characteristics,large voidage,heat resistance,chemical corrosion resistance,low pressure drop and mass transfer unit height,high pan-point,vapor and liquid contacted fully,small proportion, high mass transfer efficiency, ...