Aiguo ZHANG

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Qinhuangdao, CN

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Patents Grantslast 30 patents

Information Patent Grant
Air tightness detection device for aluminum alloy wheel hub and met...
- Patent number 9,863,838
- Issue date Jan 9, 2018
- CITIC Dicastal CO., LTD.
- Chunhai Liu
- G01 - MEASURING TESTING

Patents Applicationslast 30 patents

Information Patent Application
AIR TIGHTNESS DETECTION DEVICE FOR ALUMINUM ALLOY WHEEL HUB AND MET...
- Publication number 20160223425
- Publication date Aug 4, 2016
- CITIC DICASTAL CO., LTD
- Chunhai LIU
- G01 - MEASURING TESTING