GPC/Graphitized Petroleum Coke,also called low sulfur graphite,is made from green petroleum coke,originated in Taiwan.The raw petroleum coke is processed in the Acheson furnace,under the temperature of 2400℃,and,the volatile matter,sulfur,moisture of raw materials will be discharged during this progress,after then,the material will have a high fixed carbon,low sulfur content,and low nitrogen cotent,which will be suitable for the production of ductile iron and special steel materials.