• Precisely cast ductile iron gear has advantages of low noise, high abrasion resistance index and long service life.

    精密铸造齿轮噪音耐磨使用寿命

    youdao

  • With direction index, sapphire cover lens, never abrasion.

    带有方向蓝宝石镜头永不磨损

    youdao

  • With direction index, sapphire cover lens, never abrasion.

    带有方向蓝宝石镜头永不磨损

    youdao

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