... large quantity natural amorphous graphite carbon additiveOur company produce natural amorphous graphite carbon additive of natural amorphous graphite ... biggest deposit of amorphous graphite. graphite powder:fixed carbon (FC): 55%,60%,65%,70%,75%,78%,80 ... W70-3 W75-2 W75-3 graphite ball: fixed carbon(FC):70%, 75%, 78%, 80%, 83%,85% ... Q WT75-Q WT70-Q graphite grain:fixed carbon(FC):70%,75%,78%, 80%,83%,85% ...