... crushing, screening, dosing, mixing, compression, roasting, high pressure impregnation, graphitization, machining and other processes, has ... nonmetal materials.The specification: Specification of Ultra-High Power YBltemsUnitNominal diameter(mm)300-400450-500Specific ... Power Graphite Electrode, High Power graphite electrode, Super High Power graphite electrode, Ultra High Power graphite electrode, ...