- Rainbow Industrial (HK) International Co., Limited
- Address:809 Chan Man Street, Hong Kong Country/Region: Hong Kong Zip:918799
- wiisingonline
- Address:1 wang yuen srtreet Country/Region: Hong Kong Zip:999077
- Chikala Electronics Company Limited
- Address:Rm 52-53, Block F, 12 / F, Wah Lok Ind Centre 41-45 Shan Mei Street Country/Region: Hong Kong Zip:852
- M Tech Mfg. Ltd.
- Address:Rm 605, New East Ocean Ctr. 9 Science Museum Rd. , Country/Region: Hong Kong Zip:00000
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