- Shinhan Diamond Ind
- Address:36B-10L NAM CHEON DONG NAM DONG GU
- Yong Bee Trading Corporation
- Address:Yongbee Bldg. , 82-4, Yangjae-dong, Seocho-gu
- SHINGO GRINDING WHEEL
- Address:2F, SHINGO, 928, Jegi-Dong,
- Keumsung Grinding Wheel Co., Ltd.
- Address:395 Mongnae-dong,Danwon-gu, Ansan-si
- KBM Corporation
- Address:IT Castle, Gasandong, Geumcheongu
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