Graphite Electrode, Graphite Rod, Graphite Block manufacturer / supplier in China, offering Custom Graphite Tube - ID 20-500mm Threaded/Flanged Options, Monocrystalline Furnace Graphite Tube - Ash≤ 0.05% Isotropy≤ 1.05, High Purity Graphite Tube - 1.72g/Cm³ Density ≥ 99.9% Purity 3000° C Resistance and so on.