... .SiC: 98.5%min; 3.high temperature refractories 4.stable chemical property Black silicon carbideIntroductionBlack silicon carbide, a kind of man-made ... raw material makes good hardness and toughness,high efficiency and durability.SpecificationGood quality and high hardness;Reputable supplier and manufacture;Competitive price ... required;Payment: T/T, L/C, D/A,D/P; High quality black silicon carbide