Graphite Powder, Silicon Carbide, Recarburizer manufacturer / supplier in China, offering China High Quality Columnar Recarburizer96% with Low Sulphur Low Ash for Foundry Applications, High Purity Columnar Recarburizer F. C. 96% 5mm for Enhanced Foundry Carbon Additive Use, Columnar Recarburizer 3mm 4mm 5mm with High Fixed Carbon Low Sulphur Content Low Ash Content for Foundries and so on.