Date:9/11/2007

rivate Securities Litigation Reform Act of 1995. These forward-looking statements can be identified by words or phrases such as "will," "expects," "anticipates," "future," "intends," "plans," "believes," "estimates" and similar statements. Among other things, the business outlook and quotations from management in this press release contain forward-looking statements. Statements that are not historical facts, including statements about Sinovac's beliefs and expectations, are forward-looking statements. Forward-looking statements involve inherent risks and uncertainties. A number of important factors could cause actual results to differ materially from those contained in any forward- looking statement. Sinovac does not undertake any obligation to update any forward-looking statement, except as required under applicable law.

For more information, please contact:

Helen G. Yang

Sinovac Biotech Ltd.

Tel: +86-10-82890088 Ext. 871

Fax: +86-10-62966910

Email: info@sinovac.com

Investors/Media Contact:

Stephanie Carrington

The Ruth Group

Tel: +1-646-536-7017

Email: scarrington@theruthgroup.com

Janine McCargo

The Ruth Group

Tel: +1-646-536-7033

Email: jmccargo@theruthgroup.com

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SOURCE Sinovac Biotech Ltd. Copyright©2007 PR Newswire. All rights reserved

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