Calcium Carbide, Graphite Electrode, Cac2 manufacturer / supplier in China, offering Manufacturers Supply Graphitized Petroleum Coke Carbon Additive for High Carbon Low Sulfur Refractory Materials., Wholesale Graphitized Petroleum Coke GPC for Casting Metallurgy and Steelmaking Industry, Large Stock Available., N351 Carbon Black, with Precise Particle Size, Optimizes Performance in Applications Such as Tires and Seals. and so on.