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Cov graphite flake ntuj muab faib rau qhov twg?
Raws li daim ntawv tshaj tawm ntawm THE United States Geological Survey (2014), cov khoom pov thawj ntawm cov graphite flake natural hauv ntiaj teb yog 130 lab tons, ntawm cov uas, Brazil cov khoom khaws cia yog 58 lab tons, thiab Tuam Tshoj yog 55 lab tons, qeb duas sab saum toj hauv ntiaj teb. Hnub no peb yuav qhia koj ...Nyeem ntxiv