I-Semi GPC (SGPC) ivela kungqimba lokuvikela i-acheson furnace. Izinga lokushisa le-graphitization liphakathi kuka-1700-2500ºC. Lingowomkhiqizo we-themedium temperature graphitization. Liyi-recarburizer engabizi kakhulu ene-carbon ezinzile ephezulu, okuqukethwe kwe-sulfur okuphansi, izinga lokuncibilika okusheshayo kanye nezinga lokumuncwa eliphezulu.