CHN ENERGY Investment Group Co., LTD

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Beijing, CN

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Patents Grantslast 30 patents

Information Patent Grant
Method for constructing pumping-injection well of groundwater reser...
- Patent number 11,673,747
- Issue date Jun 13, 2023
- China University of Mining and Technology
- Shuzhao Chen
- E21 - EARTH DRILLING MINING

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Patents Applicationslast 30 patents

Information Patent Application
METHOD FOR CONSTRUCTING PUMPING-INJECTION WELL OF GROUNDWATER RESER...
- Publication number 20230030574
- Publication date Feb 2, 2023
- CHINA UNIVERSITY OF MINING AND TECHNOLOGY
- Shuzhao CHEN
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL