Fa'amoemoega: O le graphite petroleum coke GPC e faia i le suau'u coke maualuga. O se ituaiga o mea e sili ona lelei carburizing agent, ma maualuga tumau carbon, sulfur maualalo, lefulefu maualalo, maualuga absorption fua faatatau ma isi tulaga lelei. E mafai ona faʻaaogaina e gaosia ai le uamea maualuga, uʻamea ma le uʻamea.
