- zhongrui Diamond tools factory
- Address:ROOM9, 17 / F, WESTIN CENTRE, 26 HUNGTO ROA D, KOUNTONG, KOWLOON, HONGKONG
- Kaixingda Drilling Equipment Co.,ltd
- Address:UNIT 05, 7 / F, BRIGHT WAY TOWER, NO. 33 MONG KOK ROAD, KOWLOON, HK
- Gold Honest Engineering Ltd.
- Address:610E Shan Ha Tsuen
- Hongkong A-green Diamond Tools Limited
- Address:Flat 4531, 2nd Floor, Mirror Tower, Tsim Sha Tsui, Kowloon, Hong Kong
- Tianlida Triconebit Equipment co.,ltd
- Address:Guangming Road Jiulong
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