Calcium Carbide, Graphite Electrode, Cac2 manufacturer / supplier in China, offering Black Solid Calcined Petroleum Coke, Widely Used in Industries Such as Steelmaking and Aluminum Smelting., High-Temperature Calcined Petroleum Coke Special for Increasing Carbon Content in Steel Production Basic Raw Material for The Foundry Industry, Customized Multi-Parameter Processing of Calcined Petroleum Coke in All Scenarios - Sulfur Content, Particle Size, Ash Content ISO Certification Certificate and so on.