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Ndekupi iyo natural flake graphite yakagoverwa?
Sekureva kwemushumo weUnited States Geological Survey (2014), nzvimbo dzakatarwa dzechisikigo flake graphite pasi rose i130 miriyoni matani, pakati payo, matura eBrazil ane 58 miriyoni matani, uye iyo yeChina 55 miriyoni matani, iri pamusoro penyika. Nhasi tichakuudza ...Verenga zvimwe