Group Info

  • Others Mining Machine Regional
  • Coltan ore processing is a rare metal with a content of 0.0002% in the earth's crust, which is often co-existed with niobium in nature. Many minerala Contain tantalum mineral content, but seldom tantalum mineral mine(Ta/Nb ≥ 1),
    more
    • 220 total views
    • 1 total member
    • Last updated September 27, 2020

Others Mining Machine