Hutchison China Meditech Ltd. (Chi-Med), of Hong Kong, appointed Weiguo Su executive director and member of the technical committee. Su has served the company as executive vice president and chief scientific officer since 2012, and has headed all drug discovery and research since then. Prior to joining Chi-Med in 2005, Su worked 15 years for Pfizer Inc. In March, he was named one of the Most Influential Drug R&D Leaders in China by the China Pharmaceutical Innovation and Research Development Association.