- KYKY TECHNOLOGY DEVELOPMENT LTD.
- turbo molecular pump, helium leak detector.
- Address:No.13,Beiertiao,Zhongguancun,Haidian District, Beijing, Beijing, China,100080
- Wanyi Company
- helium leak detector; air testerï¼› mass spectrometer.
- Address:new and high-tech zone, Hefei, Anhui, China
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