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Ebee kesara graphite eke flake?
Dabere na akụkọ nke United States Geological Survey (2014), ihe ngosipụta nke grape grape eke ụwa dị nde tọn 130, n'etiti nke, ihe nchekwa Brazil dị nde tọn 58, na nke China bụ nde tọn 55, nọ n'ọkwa kacha elu n'ụwa. Taa, anyị ga -agwa gị ...GỤKWUO
