The Board of Directors of China Biotech Services Holdings Limited announced that with effect from 20 May 2019, Mr. Yao Michael Yi has been appointed as an executive Director and a co-chairman of the Board. Yao was a senior medical evaluator of the gene and cellular therapy section of U.S. Food and Drug Administration from October 2004 to December 2017 and have taken part in the drafting and editing work of the FDA's Guidance for Industry for gene and cellular therapies.