bst365最新正规买球

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Gold Suppliers > Dunhua Zhengxing Abrasive Co., Ltd.
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Featured Products
  • inquireBoron carbide
    CAS NO : 12069-32-8;   MF : B4C

    Boron Carbide (B4C) is one of the hardest man-made materials. Its hardness with Mohs hardness 9.36 and microscopic hardness 5400 to 6300kg/mm?is only exceeded by cubic boron nitri... >>>

  • inquireBoron carbide
    CAS NO : 12069-32-8;   MF : B4C

    Boron Carbide (B4C) is one of the hardest man-made materials. Its hardness with Mohs hardness 9.36 and microscopic hardness 5400 to 6300kg/mm?is only exceeded by cubic boron nitri... >>>

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