- One Four You Telecom Inc
- Address:770-9,Yeoksam-dong ,Gangnam-gu
- NTI KOREA CO., LIMITED
- Address:Daemyung-Zest407, # 156-3 Jungja-dong Bundang-Ku
- EZVILLE CO LTD
- Address:kumchun
- HYUNDAI TELECOM
- Address:HYUNDAI TELECOM BLDG., 4273-12 SHINGIL-DONG, YOUNGDUNGPO-GU
- KOREA COMMUNICATION ELECTRONICS
- Address:Cheongcheondong Bupyunggu
- KD ONE CO., LTD
- Address:5F, KOAMI Bldg. , 13-6, Yeouido-dong, Yeongdeungpo-gu
- Adic co., Ltd.
- Address:654-12, Bansong-ri, eonyang-eup
- WINEYE KOREA CO., LTD.
- Address:819-Ho, Suwon Cheomdan Venture Valley, 958 Gosaek-Dong, Gwonseon-Gu,
- Kyung Dong One
- Address:2f, Tongil Heavy Industry B/D,371-36, Gasan-dong, Geumcheon-gu
- Forrinx Electronics CO., lTD
- Address:36-12 Dang-dong
- EPIK System Co., Ltd
- Address:# 910 Leaders Tower Bldg. , 60-15 Gasan-dong, Geumcheon-gu,
- KOCOM CO LTD
- Address:7f Kocom Bldg, 260-7, Yumchang-Dong
- Hanse Electronics Co., Ltd
- Address:2f, 260-7 Youmchang-Dong, Gangseo-Gu
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