 BEIJING--BUSINESS WIRE--Sinovac Biotech Ltd. NASDAQ: SVA Sinovac or the Company, a leading provider of biopharmaceutical products in China, has filed its 2020 annual report on Form 20-F with the U.S. Securities and Exchange Commission for the year ended December 31, 2020. The Company also reported its unaudited financial results for the fourth quarter ended December 31, 2020. Fourth Quarter and Full Year 2020 Financial Summary Sales for the fourth quarter of 2020 were 327.5 million, 