1 Bayer AG (ADALAT)
2 Shanghai Shyndec Pharmaceutical Co. Ltd. (Xinran)
3 Qingdao Huanghai Pharmaceutical Co. Ltd. (Maikaofen)
4 Beijing Honglin Pharmaceutical Co. Ltd. (Nifuda)
5 Yangtze River Pharmaceutical Group Nanjing Hailing Pharmaceutical Co. Ltd.(Shansu)