SHENYANG DAVID ENVIRONMENTAL PROTECTION & ENERGY SAVING EQUIPMENT CO., LTD.

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SHENYANG CITY, CN

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Patents Grantslast 30 patents

Information Patent Grant
Assembling unit for filtration and adsorption of waste and sewage w...
- Patent number 7,699,977
- Issue date Apr 20, 2010
- Shenyang David Environmental Protection & Energy Saving Equipment Co., Ltd.
- Dawei Zhang
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

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Patents Applicationslast 30 patents

Information Patent Application
Assembling Unit For Filtration And Adsorption Of Waste And Sewage W...
- Publication number 20070199867
- Publication date Aug 30, 2007
- SHENYANG DAVID ENVIRONMENTAL PROTECTION & ENERGY SAVING EQUIPMENT CO., LTD.
- Dawei Zhang
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE