... -transfer unit height, 3.high flooding point Plastic Hollow Floatation Ball Packing, a type of plastic random packing with features of good filtration ... water tank and Water Treatment field. It is type of plastic Random Packing, with good filtration capacity. Features:High liquid & vapor ... , catalyst, and suit for a big tower rebuilding/revamp.. Materials: PP,PE,PVC, PVDF etc Sizes: 25,38.5 50mm or ...