TREA

Long ZHONG

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  • Guangzhou, CN
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Patents Grantslast 30 patents

  • Information Patent Grant

    Four valve disc frictionless ball valve
    • Patent number 11,009,135
    • Issue date May 18, 2021
    • South China Company, China Oil & Gas pipeline Network corporation
    • Zhongshan Tian
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...

Patents Applicationslast 30 patents

  • Information Patent Application

    FOUR VALVE DISC FRICTIONLESS BALL VALVE
    • Publication number 20200240528
    • Publication date Jul 30, 2020
    • SINOPEC MARKETING SOUTH CHINA COMPANY
    • Zhongshan TIAN
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...