... unit height, 3.high flooding point Plastic Hollow Floatation Ball Packing, a type of plastic random packing with features of good filtration capacity ... used in coal gas washing tower, fertilizer heat gas saturation tower, naphthalene washing tower, ammonia washing tower, but also as the ... heat exchange machine , catalyst, and suit for a big tower rebuilding/revamp.. Materials: PP,PE,PVC, PVDF etc Sizes ...