- Camactech Speakers
- Address:280 Tung Chau St. Kowloon Hong Kong Hong Kong 852 Hong Kong
- Tronifer (HK) Ltd
- Address:Falt C, 10/F, Kai Centre, 36 Hung To Road, Kwun Tong, Hong Kong Hong Kong
- Confield Technology Limited
- Address:13E Leahander 28 Wang Wo Tsai Street Tsuen Wan N.T. Hong Kong
- Accon Technology Ltd
- Address:Sheung Wan Hong Kong Hong Kong Hong Kong Hong Kong
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