CALCINED PETROLEUM COKE, SYNTHETIC GRAPHITE , FLAKE GRPAPHITE , IRON DISULFIDE , SYNTHETIC IRON OXIDE, MICACEOUS IRON OXIDE,  AND OTHERS FOR MAKING FRICTION MATERIALS, ABRASIVE WHEEL, FOUNDRY COATING MATERIALS, LUBRICATION ADDITIVE , CONDUCTIVE RUBBER PARTS , RUBBER WIPERS, CARBON RAISER FOR STEEL CASTING AND OTHERS