healthcareA U.S. investor has challenged a management buyout proposal to take NASDAQ-listed Sinovac Biotech Ltd. private, saying the management and insiders made the bid one business day after the company received approval to produce a groundbreaking vaccine in China. In February, Chinese bio-pharmaceutical and vaccine firm Sinovac's chairman and CEO Yin Weidong and SAIF Partners […]

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Visit the original source and full text: China Money Network