Seo Young Tech Co., Ltd.
- Manufactures coreless motors and generators for electrical tools, automotive manufacturing systems, electric vehicles, OA system drives, aircrafts and home appliances.
- http://www.evsmotor.co.kr/

Hankook EDM
- Manufacturers various kinds of electric discharge machines (EDMs). Locations in Busan and Gwangju. [Korean, English]
- http://yooil.koreasme.com/

Keyang Electric Machinery Co., Ltd.
- Makes electric power tools, engines and DC motors. Factories in Ansan and Cheonan. [Korean, English]
- http://www.keyang.co.kr/index_e.asp

Tongmyung Heavy Industries Co., Ltd.
- Maker of hydraulic devices for commercial and military applications. Headquartered in Changwon with an office in Seoul. [Korean, English]
- http://www.tongmyung.co.kr/

Samsung Heavy Industries Co., Ltd.
- Shipbuilding, offshore facilities, port facilities, bridges and other steel structures. Headquartered in Seoul with a shipyard in Geoje. [Korean, English]
- http://www.shi.samsung.co.kr/

Daedong
- Maker of agricultural equipment and engines. Office in Seoul, factory in Daegu. [Korean, English]
- http://www.daedong.co.kr/