• Precision stem and packing Chambers. Straightness, roundness and fine finish of stem and packing chamber wall are essential.

    精密加工填料。阀杆和填料平直度、圆度和表面光洁度最基本的要求。

    youdao

  • Precision stem and packing Chambers. Straightness, roundness and fine finish of stem and packing chamber wall are essential.

    精密加工填料。阀杆和填料平直度、圆度和表面光洁度最基本的要求。

    youdao

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