Pingzhi CHEN

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Hangzhou, CN

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Patents Grantslast 30 patents

Information Patent Grant
Surrounding rock pretreatment method for TBM passing through round...
- Patent number 9,995,139
- Issue date Jun 12, 2018
- Weijiang Chu
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
SURROUNDING ROCK PRETREATMENT METHOD FOR TBM PASSING THROUGH ROUND...
- Publication number 20180010452
- Publication date Jan 11, 2018
- PoweChina Huadong Engineering Corporation Limited
- Weijiang CHU
- E21 - EARTH DRILLING MINING