... graphite powder carburizer for steel making,casting coating,brake pads authorized by ISO9001,tested by GB/T3251-2008 Specification ... 1%max,2%maxPicturesproductPackingAbout usOur company has been manufacturing and exporting graphite products for about 20 years,enjoying a ... are used as carbon additives for steelmaking,foundry,casting and alloy,including Graphitized Petroleum Coke(GPC),Calcined Petroleum ...