Cong Zheng

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Wuhan, CN

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Patents Grantslast 30 patents

Information Patent Grant
Ultra-long tunnel sewage disposal, separation and drainage structur...
- Patent number 11,753,937
- Issue date Sep 12, 2023
- CCCC Second Highway Consultants Co., Ltd.
- Yong Cheng
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
PREFABRICATED TUNNEL PRESTRESSED ANCHOR AND MANUFACTURING METHOD AN...
- Publication number 20250146415
- Publication date May 8, 2025
- CCCC SECOND HIGHWAY CONSULTANTS CO., LTD.
- Wenbo PENG
- E21 - EARTH DRILLING MINING
Information Patent Application
Ultra-Long Tunnel Sewage Disposal, Separation and Drainage Structur...
- Publication number 20220316337
- Publication date Oct 6, 2022
- CCCC Second Highway Consultants Co., Ltd.
- Yong Cheng
- E21 - EARTH DRILLING MINING