Kumu: Hana ʻia ka graphite petroleum coke GPC me ka petroleum coke kiʻekiʻe. He ʻano mea hoʻoheheʻe kalapona kiʻekiʻe ia, me ke kalapona paʻa kiʻekiʻe, ka sulfur haʻahaʻa, ka lehu haʻahaʻa, ka nui o ka omo ʻana a me nā pono ʻē aʻe. Hiki ke hoʻohana ʻia e hana i ke kila kiʻekiʻe, ka hao hoʻolei a me ka metala.
