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    Company dedicated to the development of fire-resistant insulation materials and applications.

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    The paper reviews the researches recently done into Nano-materials. It mainly introduces the physical and chemical preparation process of Nano-materials, and its exploitation and application.

    youdao

  • 介绍了国内外气门材料使用研制以及国外粉末冶金气门座开发应用情况。

    Valve seat materials application and development in China and abroad are introduced, especially the research and application of the powder metallurgy valve seat abroad.

    youdao

  • 介绍了国内外气门材料使用研制以及国外粉末冶金气门座开发应用情况。

    Valve seat materials application and development in China and abroad are introduced, especially the research and application of the powder metallurgy valve seat abroad.

    youdao

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