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Changxiao ZUO

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  • Yantai, CN
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Patents Grantslast 30 patents

  • Information Patent Grant

    Valve seat, plug valve, and fracturing manifold
    • Patent number 12,287,046
    • Issue date Apr 29, 2025
    • Yantai Jereh Petroleum Equipment & Technologies Co., Ltd.
    • Jinling Huang
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...

Patents Applicationslast 30 patents