- Joyfully Optic
- Address:No.33, East of Wan Fu Commercial street Shenzhen, Guangdong
- GAO Instrument
- Address:601 Milner Avenue,3rd Floor Toronto, Ontario
- NephSystem Technologie
- Address:B-1285 56th Street Delta, British Columbia
- GAO Instruments
- Address:601 Milner Avenue,3rd Floor Toronto Ontario M1B 2K4 Canada
- Joyfully Optics
- Address:No.33, East of Wan Fu Commercial street Shenzhen Guangdong 518103 Canada
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