- DOULTECH CO.,LTD.
- Address:# Na-2203 Chungang Yutong, 1258 Gurobon-dong, Guro-gu
- EGLINK SYSTEM CO LTD
- Tel : +82-70-8768-8899Cell : +82-10-3228-4388Contact : Tommy.
- Address:ChnungAng Circulation Ga-2309, Kuro-Dong 1258
- PROSEMITEK
- Address:Ga-2622, Joongang Complex, #1258, Guro-Dong, Guro-Gu Seoul, Korea (South) 152-721
- S.M. Engineering Co.,
- Address:10th fl, Sueun Assembly House Bldg., Gyeongun-dong, Jongno-gu
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