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Kodi ufa wa graphite woyeretsedwa kwambiri ndi wotani?
Kodi ufa wa graphite woyeretsedwa kwambiri ndi wotani? Ufa wa graphite woyeretsedwa kwambiri wakhala chinthu chofunikira kwambiri choyendetsera zinthu komanso chida chogwirira ntchito m'makampani amakono. Ufa wa graphite woyeretsedwa kwambiri uli ndi ntchito zambiri, ndipo umasonyeza makhalidwe abwino ogwiritsidwa ntchito m'mafakitale...Werengani zambiri