[Sinovac Holds 2010 Annual Meeting of Shareholders Beijing — July 15, 2010 — Sinovac Biotech Ltd. (Nasdaq: SVA), a leading developer and provider of vaccines in China, announced today that it held its 2010 Annual Meeting of Shareholders on Thursday, July 15, 2010 at 9:00 a.m. Beijing Time. The required quorum, a majority of the common shares outstanding, was voted] [1 -32371 SINOVAC BIOTECH LTD. No. 39 Shangdi Xi Road Haidian District Beijing 100085, People’s Republic of China Form 20-F x Form 40-F o o o SINOVAC BIOTECH LTD.]