1.Package:25kg bag,50kg bag,1 MT bag 2.70#,80#,85#,90#,95#,98#,99#,99.5# 3.Grain size:0-200mesh,0-3mm 4.ISO9001:2008 Detailed discription:It is also called silica crystallization,it is grey or hoar powder,its refractoriness is above 1600 celsius degreeUsage:1.Improve the resistant compression,break resistant, impervious,anticorrosive,impact resistance and wear- resisting property.2.Water ...