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Zhengzhou Zhongrui Superhard Materials Co. Ltd.

立方氮化硼,CBN,金刚石,金刚石砂轮,微粉,聚晶,复合片,超硬材料,磨料,黑色一型单晶,...

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  • Contacts：zhang_qing_e
  • Tel.:：13837134568
  • Mphone：13837134568
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