Mbali: Mkulu wa carbon, otsika sulfure, otsika nayitrogeni, digiri yapamwamba ya graphitization, mkulu wa carbon98.5% wokhala ndi mphamvu yokhazikika pakuwongolera za carbon.
Graphitized Petroleum Coke amapangidwa kuchokera ku mafuta apamwamba a petroleum coke pansi pa kutentha kwa 2800ºC.