- Toyo Ink (Thailand) Co., Ltd.
- Thai Kansai Paint Co., Ltd.
- Kansai Resin (Thailand) Co., Ltd.
- Thai Mitsui Specialty Chemicals Co., Ltd.
- CCI Automotive Products Co., Ltd.
- Sumika Polymer Compounds (Thailand) Co., Ltd.
- Chukyo Yushi (Thailand) Co., Ltd.
- JGC Holdings Corporation (Japan)