Koka Petroleum Graphite(GPC) Fa'amatalaga:FC: 99 % min S: 0.05max lefulefu: 0.5 % maualuga VM: 0.5% maualuga Susū: 0.5% maualuga Tele: 0.5-3mm;1-5mm,3-8mm,8-30mm, 0-30mm Fa'aputuina: Taga Jumbo (E tusa ai ma manaoga o tagata, e mafai ona matou tuʻuina atu faʻamatalaga eseese ma le tele.)