• Toyo Ink (Thailand) Co., Ltd.
  • Thai Kansai Paint Co., Ltd.
  • Kansai Resin (Thailand) Co., Ltd.
  • Thai Mitsui Specialty Chemicals Co., Ltd.
  • Mitsui Hygiene Materials (Thailand) Co., Ltd.
  • CCI Automotive Products Co., Ltd.
  • Tokuyama Siam Silica Co., Ltd.
  • Sumika Polymer Compounds (Thailand) Co., Ltd.
  • Tostem Thai Co., Ltd.
  • TOHPE Thailand Corporation Ltd
  • Toshiba Consumer Products (Thailand) Co., Ltd.
  • Thai Plastic and Chemicals Public Co., Ltd.
  • Chukyo Yushi (Thailand) Co., Ltd.

  • JGC Holdings Corporation (Japan)
  • Mitsubishi Heavy Industries Environmental & Chemical Engineering Co., Ltd. (Japan)