Graphite Petroleum Coke, Graphite Electrode Powder, Isostatic Pressing Graphite manufacturer / supplier in China, offering Hot Sell Graphite Petroleum Coke GPC 1-3mm1-5mm Used as a Carburizer, Graphite Electrode for Steel Industrial Use for Eaf High Quality Product, UHP HP RP Graphite Electrode 400-700mm for Metallurgical Production and so on.