Ụlọ ọrụ mmepụta ihe anyị nwere ike inye ihe na ngwaahịa carbon n'ọtụtụ ebe. Anyị na-emepụta ma na-enye electrode graphite na ọkwa UHP/HP/RP, coke petroleum calcined (CPC), coke petroleum graphitization (GPC), coke agịga, graphite block na graphite powder. A na-ebupụ ngwaahịa anyị na ihe karịrị mba 10 na mpaghara mba ọzọ (KZ, Iran, India, Russia, Belgium, Ukraine) ma nweta aha ọma site n'aka ndị ahịa anyị n'ụwa niile.