... makes good hardness and toughness,high efficiency and durability.SpecificationGood quality and high hardness;Reputable supplier and manufacture ... P12-P2500;0-1mm,1-3mm,5-10mm,200-0meh;Other size is available as required; ... ;As main material of deoxidier;Founctional ceramic; Metallurgy;High advanced refractory materialPacking: 25kg/bag,1000kg/big bag ... , L/C, D/A,D/P; High quality black silicon carbide