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Ebee ka ekesara graphite flake eke?
Dị ka akụkọ nke United States Geological Survey (2014) si kwuo, ihe ndị e gosipụtara na graphite eke sitere n'ụwa bụ nde tọn 130, n'ime ha, ihe nchekwa Brazil dị nde tọn 58, na nke China bụ nde tọn 55. ogo kacha elu n'ụwa. Taa, anyị ga-agwa y ...GỤKWUO