1 North China Pharmaceutical Co. Ltd. (Yishenbao)
2 Eisai (China) Pharmaceutical Co. Ltd. (Methycocal)
3 Yangtze River Pharmaceutical Group
Nanjing Hailing Pharmaceutical Co. Ltd. (Qixin)
4 Eisai Pharmaceutical Co. Ltd. (Methycocal)
5 Jiangsu Sihuan Biopharmaceutical Co. Ltd. (Zhuohe)