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Iphi i-flake graphite yendalo ihanjiswa?
Ngokwengxelo ye-United States Geological Survey (ka-2014), oovimba be-flake grafite bendalo emhlabeni ziitoni ezizizigidi ezili-130, phakathi kwazo, oovimba baseBrazil zizigidi ezingama-58 zeetoni, kunye neChina ziitoni ezingama-55 ezigidi, Ukubeka indawo ephezulu emhlabeni. Namhlanje siza kukuxelela ...Funda ngokugqithisileyo
