Te kōka hinu graphite e whakamahia ana i roto i te ahumahi hanga maitai me te whakarewanga

Whakaahuatanga Poto:

Āhuatanga: He nui te waro, he iti te whanariki, he iti te hauota, he nui te tohu whakakāwhata, he nui te waro 98.5% me te pānga pumau ki te whakapai ake i te ihirangi waro.