• Merck KGAA
• Kemin Industries Inc.
• Balchem Corporation
• Eastman Chemical Company
• Spectrum Chemical Mfg. Corp (Spectrum Laboratory Products Inc.)
• BASF SE
• Tokyo Chemical Industry Co. Ltd.
• Nuproxa Switzerland Ltd
• Pestell Nutrition Inc. (Barentz)
• Algry Quimica S.L.