北京快乐8怎么买最划算

  •  Vacuum Melting Furnace
    Vacuum Melting Furnace

    The vacuum melting furnace is mainly used for smelting metal materials (such as stainless steel, nickel base alloy, copper, alloy steel, nickel cobalt alloy, rare earth neodymium iron, etc.) under vacuum or protective atmosphere, and also for vacuum refining and precision casting of alloy steel. ... [detailed]

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