Calcium Carbide, Graphite Electrode, Cac2 manufacturer / supplier in China, offering Metallurgical Calcium Carbide Granules for Steel Desulfurization and Deoxidation, Manufacturer Supply Graphitized/ Calcined Petroleum Coke Recarburizer Semi, Gas Yield 295 -305L/Kg Premium Calcium Carbide 15-25mm 25-50mm 50-80mm 80-120mm Granules for Welding and Cutting Acetylene and so on.