Carbon da aka kunna ta oal ana haɓaka ta hanyar jerin matakai kamar carbonization, sanyaya, kunnawa, da wankewa. Fitowarsa gabaɗaya baki ne cylindrical carbon kunna carbon, amorphous coal barbashi kunna carbon, kuma aka sani da crushed carbon. Cylindrical kunna carbon, kuma aka sani da columnar carbon, gabaɗaya an yi shi daga powdered albarkatun kasa da kuma binders, wanda aka gauraye, extruded, sa'an nan carbonized, kunna, da sauran matakai. Hakanan ana iya fitar da shi ta amfani da carbon da aka kunna foda da ɗaure. Ya haɓaka tsarin pore, aikin adsorption mai kyau, ƙarfin injiniya mai ƙarfi, mai sauƙin haɓakawa, da ƙarancin farashi; Ana amfani da shi don tsarkakewar iskar gas mai guba, maganin iskar gas, masana'antu da jiyya na tsabtace ruwa na gida, dawo da sauran ƙarfi, da sauran fannoni.