- SDM Engeneering
- Address:jamsil
- Korea Optron corp.
- Address:978-1
- Hamee Int'l
- Address:Kangdong 8-13
- FCTKOREA
- Address:Techno Mart F2 D61, Guui 3-dong
- Thothpia
- Address:Cheonhyun Dong 388-9
- Logsys Co., Ltd.
- Address:533,Yongsan-dong ,Yuseong-gu
- SHINSUNG SAW ELECTRONICS CO.
- Address:1106, Daeryung TechnoTown VI, Gasan-dong, Kumchun-gu, Seoul, 153-774 Korea
- Sunwoo Communication., Ltd
- Address:
- Sung Hwa Telecommunication Co.,Ltd
- Address:258-1,Yadang-ri ,Gyoha-eup ,Paju-si
- Seohwa Telecom Co.,LTD.
- Address:SEOHWA Bldg. , # 678, Gasan-dong, Gumcheon-gu
- Polypix Inc.
- Address:713, Hyundai Venture-vill, Suseo-dong, Gangnam-gu
- Seyoung Information And Telecommunication Co., Ltd
- Address:sanhodaero, gumi, kyungsangbokdo, South Korea
- AddPac Technology
- Address:2F, Kyeong-An Bldg. , 769-12 Yeoksam-dong, Kangnam-gu
- TLS Co., Ltd
- Address:
- Dae Yang Magnet
- Address:615,Daecheon-dong ,Dalseo-gu
- Link Tek
- Address:418 Dochang-dong,Dochang-dong ,Siheung-si
- Line Tech Co.
- Address:70BL-7LOT 639-7 Gojandong
- INFOMIND CO., LTD.
- Address:2F, 2820bunji, Yongdam 1-dong, Jeju Si
- CVC Co., Ltd
- Address:2f, Backma-building Yatap-dong, Bundang-gu
- EASYPHONICS CO. LTD
- Address:# 2003, Shinan metrokhan Bldg. Bisan-Dong 1115