- Incheon surveying Instrument Inc.
- Address:
- KRKC CO LTD
- Address:409-13, Metan-3Dong, Yeongtong-Gu,
- Ge Energy Korea Ltd.
- Address:Bently Bldg.,106-2 Yangjae-dong ,Seocho-gu
- Yokogawa Measuring instruments Korea Corporation
- Address:
- Chang Dae Hi-tech
- Address:604b-13, Banweol Industrial Region, Sunggok-dong
- DAEIL SYSTEMS CO., LTD.
- Address:27-26 Nan-Dong, Cheoin-Gu
- autosys
- Address:1001-002, it castle 1dong, 550-1,
- Hyunil Lab-Mate co,. Ltd.
- Address:
- Young Heung Corporation Ltd.
- Address:RM139,ANSUNGSANG GA B/D,410-13,Sindorim-dong ,Guro-gu
- Tae Kwang Electronic Co.
- Address:306-16, Munhyun-dong, Nam-gu
- Dong Il Biotech Co.,Ltd
- Address:226 Poi-dong,Poi-dong ,Gangnam-gu
- MEK Engineering Corp.
- Address:
- Aegis Corea Ltd.,
- Address:4floor,99-9 Dodang Dong, Wonmi Gu,
- Sanju Co., Ltd.
- Address:SANJU B/D,Seocho 3-dong ,Seocho-gu
- Sea Kwang Touch One
- Address:519-5,Geomdan-dong ,Buk-gu
- Joong Ang Corporation
- Address:No.289-12, Jangang 4-dong, Dongdaemun Ku, Seoul, Korea
- Komelon Corporation
- Address:
- SUNIL INSTRUMENT CO., LTD.
- Address:# 208-28, Sinho-Dong, Gangseo-Gu
- POWER21
- Address:609, hanshin S-MECA, 1359 Guanpyeong-dong, Yuseong-gu, Daejeon, Korea
- INSSOL CO.,Ltd
- Address:447-2 Geo Song Building Fifth Floor