... -4, 4-8, 8-16mm Good quality, Relative comp Natural Zeolite for Water Filtration:Size:0.8-1.5,1-1 ... -8, 8-16mmGood quality,Relative competitive price Application of Natural Zeolite in filter water:It can purify water turbidity, chroma, smell ... harmful substances, removing ironin water, fluorine effect more notable. Therefore active zeolite is the new ideal filter material in industrial water supply ...