- Asan Charcoal
 - Kwangmyung-si - Offers natural wood charcoal, fire starter products, water filtration agents, and herbal products. - Daljay Chemical Co., Ltd.
- Pocheon - Manufacturer of phosphates chemical products.
- Ducksung Chemical Co., Ltd.
- Anyang - Specialising in synthetic leather and polyurethane resin.
- G-Dok Ind.
- Anyang - Offers multi functional, shock absorbing, and common caster sets and wheels.
- Ilsan Suntek Corporation
- Kunpo - Manufacturer of ultrasonic cleaning units and OEM products.
- Inchang Electronics Co., Ltd
- Anyang - CRT socket, terminal, jack and other electro-mechanical components.
- Joong Ang Engineering, INC.
- Kimpo-si - Developing and providing a wide variety of packaging machines to confectionery industry.
- Kocom
- Pocheon - Offering videophone, digital still camera, interphone, doorphone, CCTV system, and multimedia PC camera.
- KRD
- Kwangmyung-si - Exports wireless data communication devices.
- Pacific Zipper
- Kwangju-kun - Plastic, polyester, and metal zippers and sliders.
- Samsung Advanced Institute of Technology (SAIT)
- Yongin-Si - Conducting research in the fields of information processing, material and device, chemistry, biomedical engineering, and more.
- Samyoung Electronics Co., Ltd.
- Sungnam - Various capacitors and humidity sensor units.
- Sungmin Enterprise
- Suwon - Textile printing, specialising in silk and polyester fabrics, for major label apparel lines.
- TECH-Line
- Pocheon - Cleaning machines to remove static electricity and particles.
- Tudee Diamond Ind Co., Ltd
- Suwon - Manufacturer and exporter of diamond cutting tools including laser welded saw blades, sintering blades, brazing blades, core drills, and grinding cup wheels.
- Vatek Inc.
- Sungnam - Computerized sock knitting machines.
- Wonjae Corporation
- Yongin-Si - Manufacturer and supplier of a multi-stage sludge dryer.
- YuShin Electronic
- Kwangmyung-si - Specialises in various kinds of jacks.
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