- Sungjin Electronics Co.,Ltd.
- Address:Yongdap-Dong 235-8# 510
- SayPen Div. of navi-IT Corp.
- Address:Hongje 1 Dong
- EC Global Co.,Ltd
- Address:17F City Tower, 159-9
- MOATEK
- Address:Rm306, 3f, Rio Bldg. 790-2 Yeoksam-Dong
- Koreacomic
- Address:Bukgu Jangsungdong
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