- Sinokit Enterprise Limited
- Address:Room 2105, XM1362, Trend Centre 29-31 Cheung Lee Street, Chai Wan, HongKong
- Tianpeng imp.&exp. Trade Co.,Ltd
- Address:No. 1 Wang Yuen Street
- Weafo Instrument
- Address:15 Hing Yip St, Kowloon
- Metrohm China Ltd.
- Address:Room 808, 18 Westlands Street
- Inteke Instrument Co.,Ltd
- Address:12 / F, TUNG CHUN COMMERICAL CENTRE, 438-444 Shanghai STREET, KOWLOON, HONGKONG
- Alston Technology Development Limited
- Address:02 Alston gardon