- Y&Y Hong Kong Enterprises Company Limited
- Address:Rooms 05-15, 13A/F., South Tower, World Finance Centre, Harbour City, 17 Canton Road, Tsim Sha Tsui, Hong Kong, Hong Kong
- Hong Kong Equipment and Pipes Supplies Ltd
- Address:Hong Kong
- Hang Hing Metal Foundry Pro. Fty. Ltd
- Address:Room 7, 6/F, Blk C, Wah Tat Industrial Centre, 8-10 Wah Sing Street, Kwai Chung, Other, Hong Kong
- Contact Manufacturing Ltd
- Address:2402, Dominion Centre, 59 Queen's Road East, Hong Kong, Other, Hong Kong
- CONWEAL TECHNOLOGIES CO., LTD.
- Address:RM1601, Chow Tai Fook CTR, No. 580A-F Nathan Road, Mong Kok, Kowloon, HK, Kowloon, Hong Kong
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