Tangshan Chaoyang Chemical Co. Ltd. (China),Tongling Jintai Chemical Thermo Fisher Scientific (US)
Industrial Co. Ltd. (China)
and Kowa India Pvt. Ltd. (India)
Alfa Aesar
Shandong Shida Shenghua Chemical Group Co. Ltd. (China)
Merck KGaA (Germany),)
HaiKe Chemical Group Ltd. (China)
Arrow Chemical Group Corp. (China)
Tokyo Chemical Industry Co. Ltd. (Japan),. Ube Industries Ltd. (Japan)