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magnetic separation equipment for vanadium ore strict quality control

  • Cast Iron Metal Powder, Cast Iron Metal Powder Suppliers

    Silicon Slag Silicon slag (off grade silicon) is a by-product when making silicon metal. The silicon slag is much cheaper than purity silicon metal, and has many industrial applications. 2.The silicon slag powder can be made silicon briquette which has far and wide market at home and abroad.

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  • The 60-year history of tungsten-Alibaba Trade Forums

    Tungsten mining and export of total control is included in the national "Tenth Five Mineral Resource Planning", Ministry of Land, "2008 to 2015 National Mineral Resource Planning" reiterated: "The strict application of specified minerals of which protective mining the total annual mining index control, non-plan and unplanned exploitation of export.

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