SVA [SINOVAC BIOTECH] 6-K: (Original Filing)
[Sinovac Temporarily Blocks Access to Its Websites www.sinovac.com www.sinovac.com.cn BEIJING, April 30, 2018 /PRNewswire/ -- Sinovac Biotech Ltd. (NASDAQ: SVA) ("Sinovac " or the "Company"), a leading provider of biopharmaceutical products in China, today announced that Aihua Pan, the Chairman of th]