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Qiaoyun ZHANG
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Beijing, CN
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Patents Grants
last 30 patents
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Patent Grant
System for treating reverse-osmosis concentrated water with permane...
Patent number
11,046,593
Issue date
Jun 29, 2021
Greentech Environment Co., Ltd.
Zehua Li
C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Patents Applications
last 30 patents
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Patent Application
SYSTEM FOR TREATING REVERSE-OSMOSIS CONCENTRATED WATER WITH PERMANE...
Publication number
20200189937
Publication date
Jun 18, 2020
Greentech Environment Co., Ltd.
Zehua LI
C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE