• Merck Group
• Lonza Group AG
• Northeast Pharmaceutical Group Co. Ltd.
• Cayman Chemical Company Inc.
• Tokyo Chemical Industry Co. Ltd.
• Ceva Sante Animale S.A.
• Kaiyuan Hengtai Chemical Co. Ltd.
• ChengDa Pharmaceuticals Co. Ltd.
• HuangGang HuaYang Pharmaceutical Co. Ltd.
• HuBei YuanCheng SaiChuang Technology Co. Ltd.