- Kingcap
- Address:Hok Yuen Street East
- lab-fac instrument ltd.
- Address:RM. 905, WORKINGBERG COMMERCIAL BLDG. , 41-47 MARBLE ROAD
- Weafo Instruments Co.,Ltd.
- Address:15 Hing Yip St, Kowloon
- Sinokit Enterprise Limited
- Address:Room 2105, XM1362, Trend Centre 29-31 Cheung Lee Street, Chai Wan, HongKong
- Weafo Instrument
- Address:15 Hing Yip St, Kowloon
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