Cathode Carbon Block, Natural Graphite, Natural Flake Graphite manufacturer / supplier in China, offering CPC Carburizer Calcined Petroleum Coke for Ductile Iron Casting Foundries, CPC with 0.3% Low Sulfur Calcined Petroleum Coke 98.5% for Aluminum Smelting, Calcined Petroleum Coke for Steelmaking Carbon Additive Foundry Grade CPC 99% and so on.