Sinovac Biotech Ltd.
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Vials of H5N1 flu vaccine by Beijing-based drugmaker Sinovac Biotech Ltd. come off the production line at the company's facilities in Beijing. After years of supplying its own market, China's vaccine makers are gearing up to push exports. (Associated Press)
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Workers inspect labels on vials containing H5N1 flu vaccine during production at the Beijing-based drug manufacturer Sinovac Biotech Ltd. on Thursday, Nov. 24, 2011. (AP Photo/Andy Wong)
