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Qhov twg yog lub ntuj flake graphite faib?
Raws li tsab ntawv ceeb toom ntawm THE United States Geological Survey (2014), cov pov thawj reserves ntawm ntuj flake graphite nyob rau hauv lub ntiaj teb no yog 130 lab tons, cov uas, lub reserves ntawm Brazil yog 58 lab tons, thiab hais tias ntawm Tuam Tshoj yog 55 lab tons, qeb sab saum toj hauv ntiaj teb. Hnub no peb yuav hais rau koj tias...Nyeem ntxiv