- Silver Four Limited
- Address:Room 1404, 14/f., Block B, Carrianna Friendship Square, Renmin South Road, Lowu
- Merex Metal @ Plastic Ltd.
- Address:Room 1221, 12 / F, World-Wide Industrial Centre, No. 43-47 Shan Mei Street
- Master Key Metal Factory Company Limited
- Address:47 Hoi Yuen Road
- E.S. Cyprus Jewellery Export
- Address:Makariou 242 , Lakatamia
- Gem union Hong Kong limited
- Address:Flat B5, 4/F, Summit Building, 30 Man Yue Stree
- H & F International Jewellery Company Limited
- Address:41 Man Yue Street, Hunghom
- Tungsten by Chao
- Address:King&＃39;s Road, Quarry Bay, Hong Kong,
- China HK Photo Grou
- Address:8/F, Tsuen Wan Industrial Centre, 220-228 Texaco Rd. Tsuen Wan, Hong Kong,
- DIANA CAVA 1989
- Address:12C8, Mercantile Industrial Building, 16-24 Ta Chuen Ping Street, Kwai Chung
- Classic Gems Export Co Ltd
- Address:Po Box 87011
- DALLOZ Hong Kong Ltd.
- Address:Unit 07, 10/F, Tower B, Hunghom Commercial Centre, 37 Ma Tau Wai Road, Hunghom
- GOLD VILLIAGE
- Address:1008 Hobour Cneter 2, Hongham
- Technomedia Ltd
- Address:Cyberport Block C 8th floor
- JENEAR JEWELRY CO LTD
- Address:1021, 10 / F. , Ocean Centre, Harbour City, 5 Canton Rd. , Tst. , Kowloon
- Shanghai Jade Gem
- Address:Unit Q, 4/F., Phase 3, Kaiser Estate, 9-11 Hok Yuen Street,Hung Hom, Kowloon, Hung Hom, Kowloon, Hong Kong
- Caseti co
- Address:flat i, 2 / F, On Fat Bld. , Kuwn Yick St.
- Yaseen Gem
- Address:Hong Kong
- J&K International Company
- Address:Room 2301, 23 / F, World-Wide House
- LAND FORTUNE INDUSTRIAL LIMITED
- Address:Unit A, China Fen Hin Building, No.5 Cheung Yue Street, Lai Chi Kok, Kowloon
- Powa International Ltd.
- Address:21 / F, Flat H, Yee Hing Court, Tai Po Plaza