Shengyuan Qin

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Beijing, CN

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Patents Grantslast 30 patents

Information Patent Grant
Water purification and storage system, water-filtering well and pol...
- Patent number 9,359,755
- Issue date Jun 7, 2016
- Beijing Rechsand Science & Technology Group Co., Ltd
- Shengyi Qin
- E03 - WATER SUPPLY SEWERAGE

Patents Applicationslast 30 patents

Information Patent Application
Water Purification and Storage System, Water-Filtering Well and Pol...
- Publication number 20150108053
- Publication date Apr 23, 2015
- Shengyi Qin
- E03 - WATER SUPPLY SEWERAGE