... F3000 3,manufacturer Refractory , polishing ,abrasives material ,green silicon carbide with high quality1,sic ... special ceramics and high-class fire resistance material.Property:It is brown and features toughness ... conductor materials. The Chemical Composition of green silicon carbide:PurposeSpecificationChemical Composition(%)Magnetic material content(%)maxAbrasives gradeSICminF.CmaxFe2O3maxgrain12 ...