- CT Cable Co., Ltd.
- Address:28-4 Seongbuk-ri, Sunsung
- Deryook Technology Co., Ltd.
- Address:139-4,Garun-ri ,Nam-myeon ,Yeongi-gun
- HanKyung Co.,Ltd
- Address:630-3, Sungkok-Dong,
- Auto Tech Korea Co., Ltd
- Address:331-1, Misan-Dong, Shiheung-City, Kyeongki-Do, Korea 429-050
- Doestek Co.,Ltd.
- Address:126-16,Anam-dong 5-ga ,Seongbuk-gu
- ECOTHERM
- Address:2nd Fl. , Injeong Bldg. , 464-5 Galhyeon-dong
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