[Sinovac Announces Supply Agreement with Boryung Pharmaceutical Company Limited in South Korea Clarifies Details of Agreement with Boryung BEIJING, Sept. 2 /PRNewswire-Asia/ -- Sinovac Biotech Ltd. (NYSE Amex: SVA), a leading provider of biopharmaceutical products in China, announced today that it has signed an agreement with Boryung Pharmaceutical Company Limited, a Korean manufacturer of pharmaceuticals, to collaborate on marketing efforts] [FORM 6-K __________ __________ SINOVAC BIOTECH LTD. 39 Shangdi Xi Road Haidian District Beijing 100085, People’s Republic of China X Form 20-F X Yes _______ No N/A 82- SINOVAC BIOTECH LTD. Form 6-K TABLE OF CONTENTS Page 3 4]

[Sinovac's H1N1 Vaccine Passes Experts Evaluation Organized by SFDA BEIJING, Aug. 31 /PRNewswire-Asia/ -- Sinovac Biotech Ltd. (NYSE Amex: SVA), a leading provider of biopharmaceutical products in China, announced today that Sinovac's H1N1 vaccine has passed the experts evaluation organized by State Food and Drug Administration (SFDA). The vaccine is expected to obtain the production license within this week. On] [FORM 6-K __________ __________ SINOVAC BIOTECH LTD. 39 Shangdi Xi Road Haidian District Beijing 100085, People’s Republic of China X Form 20-F X Yes _______ No N/A 82- SINOVAC BIOTECH LTD. Form 6-K TABLE OF CONTENTS Page 3 4]

[Sinovac Wins Beijing Public Health Bureau's Bid to Supply Seasonal Flu Vaccine Anflu(R) to Beijing Citizens BEIJING, Aug. 28 /PRNewswire-Asia/ -- Sinovac Biotech Ltd. (NYSE: SVA), a leading provider of biopharmaceutical products in China, announced today that the Beijing Public Health Bureau has selected Sinovac as one of the four manufacturers to supply Anflu(R), Sinovac's seasonal influenza vaccine, for the] [FORM 6-K __________ __________ SINOVAC BIOTECH LTD. 39 Shangdi Xi Road Haidian District Beijing 100085, People’s Republic of China X Form 20-F X Yes _______ No N/A 82- SINOVAC BIOTECH LTD. Form 6-K TABLE OF CONTENTS Page 3 4]