... coke (C). DescriptionBlack silicon carbide is a non-metallic mineral products generated by the quartz sand (SiO2) and anthracite or petroleum ... characteristics,expansion coefficient is small,, widely used in abrasives, grinding electronic products, refractories, special ceramic, foam ceramic, coating plastic add modified, ... 601.2090.001.001.20 Silicon Carbide (SiC) for grinding electronic products