• 混砂机作者发明一种铸造新型设备具有中国专利

    Swinging mixer is a new type foundry sand mixing equipment invented by the author, which had got the patent of China.

    youdao

  • 混砂机作者发明一种铸造新型设备具有中国专利

    Swinging mixer is a new type foundry sand mixing equipment invented by the author, which had got the patent of China.

    youdao

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