- Keosan Enterprise Co.
- Address:607 Hanseo, 11-11, Yoido-Dong, Youngdeungpo-Gu, Seoul, Kor
- SLTECH
- Address:Jung-ri Technology and Information Center
- TES Co., Ltd.
- Address:Gasan-dong
- Hwashin E&B
- Address:Bupyeung-Gu, Chungchun-Dong Lionsvalley Bldg C, 1207
- Goossen Electric Co., Ltd.
- Address:585-37 Gajua-Dong Seo-Gu
1