... 2mm 2~3mm 3~5mm 6~8mm,8-10,10-12m Superiorities:1.large specific surface area2.high ... are available 6.less dustPhysical properties:The product is a white, spherical porous material with the ... is uniform, the surface is smooth, the mechanical is strong , the ability of moisture absorption is strong and the ball is ... of raw water is low, it is more than 3.0mg/g and the price is lower than synthetic resin. ...