Amafunikira kwambiri m'mafakitale monga graphite, zopindika, zojambula zojambula, ndi zina zowonjezera. Zipangizo zazikulu za mabulosi a browash ndi graphite, graphite yodzaza ndi graphite ndi chitsulo (yamkuwa, siliva), yomwe imagwiritsidwa ntchito kwambiri m'magetsi ambiri. Kwa zaka zambiri, makampani afuna kaboni poyamwa komanso chokhazikika. Zojambulajambula zosindikizira zojambulajambula zopangidwa ndi ife tayezedwera ku National Morbon Woyang'anira komanso malo owoneka bwino,...
Zida Zamagulu : Magawo a graphite > Magawo ena a graphite