- Bong Myung Industrial
- Daeyang Electric
- Daeyang Electric Supply Co., Ltd.
- Gold Star Cable
- HI - PRES Korea Co., Ltd.
- Koc Electric Co., Ltd.
- Korea U.V Development Co., Ltd.
- Korea Welding Electrode
- Kuck Dong Electric Wire
- Sedhan Development
- Shinyeong Electric
- Yehab Electric Cable
- Korean Heavy Machinery Industries
- Daeho Flow Instruments Co., Ltd.
- Daiwa Corporation
- Dong Heung Ship Equipment
- MRC (Marine Radio Co., Ltd.)
- NK Co., Ltd.
- Hyundai Precision & Engineering Co., Ltd.
- Kangrim Industries Co., Ltd.
- Han-Sung Electric Heating Equipment
- Han-Young Kee Jun Industrial
- Jonghap Compressors
- Kyungwon Century Co., Ltd.
- Oyang Kong Jo Ki
- Sam-Jeong
- Oriental Precision & Engineering Co., Ltd.
- Suh Kwang Machinery & Engineering
- Korea Flange
- Sungmi Co., Ltd.
- Daeyang Instrument Co., Ltd.
- Dong Myung Heavy Industries Co., Ltd.
- Tong Myung Heavy Industries
- Yoo Won Industries Ltd.
- Dae Dong Metal Industrial
- Dai Yong Metal
- Danfoss Marine Systems
- Hanni Hydraulic Machinery Co., Ltd.
- Hyup Dong Metal
- Kang Rim Technical Industries
- Keystone Valve Korea
- Keystone Valve
- Kook Jae Valve
- Korea Flange
- Kum Kang Bend
- Mt.H Controls
- Oyang Kong Ji
- Sam Shin Iron
- Seon-li Metal
- Sung Kwany Fitting Industrial
- Woo Sung Fitting Industrial
- Dong Yang Elevator
- Hundai Elevator
- Daeyang Electric
- Gold Star Instruments & Electric
- Hyundai Electrical Engineering
- Korea Taiyo Electric
- Donghwa Precision Industrial
- Pohang Marine Engineering
- Yoo Won Industries Ltd.
- Seil Seres Co., Ltd.
- Sewon Industries Co., Ltd.
- Sil La Metal Industry
- Suh Kwang Machinery & Engineering
- Suro Propeller & Machinery
- Bonng Myung Industrial
- Hanyoung Engineering Co., Ltd.
- Hai Yang Electric Equipment
- Oriental Precision Company
- Samkun Century Co., Ltd.
- Shin Shin Machinery Co., Ltd.
- Dai Jin Industries
- Samgong
- Suh Kwang Machinery & Engineering
- Ton Myung Heavy Industries
- Jung-A Marine Equipment MFG Co., Ltd.
- Gold Star Precision
- Hanla Level Co., Ltd.
- Hai Yang Electric Equipment
- Oriental Precision Company
- Pan-Asia
- Saracom
- Hyundai Marine Machinery Co., Ltd.
- Dae Dong Metal Industrial
