Enwere ike iji graphite mee ihe dị ka ụzọ pensụl, pigmenti, onye na-egbuke egbuke, mgbe nhazi pụrụ iche, nwere ike iji ihe dị iche iche pụrụ iche mee ihe, nke a na-eji na mpaghara mmepụta ihe metụtara ya. Ya mere, gịnị bụ kpọmkwem ojiji nke graphite ntụ ntụ? Nke a bụ nyocha maka gị. Graphite ntụ ntụ nwere ezigbo nkwụsi ike kemịkalụ. Nkume...
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