amorphous graphite powder carburizer for steel making,iron casting authorized by ISO9001,test by GB/T free sample ... main items are used as carbon additives for steelmaking,foundry,casting and alloy,including Graphitized Petroleum Coke(GPC),Calcined Petroleum Coke( ... CPC),Carbon Anode Scrap,Carbon Electrode Paste,and so on.The detailed specification of Amorphous Graphite Powder ...