... 3.More than 90% exported 4.abrasive High purity,black silicon carbide abrasive1.High purity,SIC:98%min2.FEPA,JIS,GB series ... 3.More than 90% exported 1.DescriptionBlack silicon carbide is produced at high temperature in an electric resistance type furnace with ... is made in the resistance furnace by high temperature. 3.Black crystal, hardnessBlack silicon carbide abrasives are suitable for working on ...