(1) Halitta graphite lantarki. Na halitta graphite lantarki da aka yi da na halitta flake graphite a matsayin albarkatun kasa. A cikin graphite na halitta don ƙara kwalta kwalta, bayan kneading, gyare-gyare, gasa da machining, zaku iya shirya na'urar graphite na halitta, tsayayyar sa yana da girma, gabaɗaya 15 ~ ...
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