Rongfeng Chen

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Guangdong, CN

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Patents Grantslast 30 patents

Information Patent Grant
Construction method for a cantilever beam on a central pier
- Patent number 10,914,043
- Issue date Feb 9, 2021
- POLY CHANGDA ENGINEERING CO., LTD.
- Gangliang Liu
- E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES

Patents Applicationslast 30 patents

Information Patent Application
CONSTRUCTION METHOD FOR A CANTILEVER BEAM ON A CENTRAL PIER
- Publication number 20210054584
- Publication date Feb 25, 2021
- POLY CHANGDA ENGINEERING CO., LTD.
- Gangliang Liu
- E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES