Maifan Stone 1.Size: dia.3-5mm,5-8mm,11-13mm 2.Specification:granule 3.color:dill brown Maifan Stone Item No.DK-MFSSizedia.3-5mm,5-8mm,11-13mm SpecificationgranularColordill brownMain IngredientMaifan stoneFunctionsAnti-bacterial, Dispelling the taste, Adsorption, filtration, Improve the quality of drinking water Maifan Stone