Huntsman International LLC (US)
LANXESS (Germany)
BASF SE (Germany)
The Lubrizol Corporation (US)
Merck KGaA (Germany)
Seiko Chemical Co. Ltd (Tokyo)
Eastman Chemical Company (US)
Duslo a.s. (Slovakia)
SONGWON (South Korea)
Jiangsu Feiya Chemical Industry Co. Ltd (Austria) and Nantong Xinbang Chemical Technology Chemical Co
Ltd (China).