A staff member checks the packaging quality of COVID-19 inactivated vaccine products at a packaging plant of the Beijing Biological Products Institute Co., Ltd. in Beijing, capital of China, Dec. 25, 2020. (Xinhua/Zhang Yuwei)
A staff member checks the packaging quality of COVID-19 inactivated vaccine products at a packaging plant of the Beijing Biological Products Institute Co., Ltd. in Beijing, capital of China, Dec. 25, 2020. (Xinhua/Zhang Yuwei)
A staff member works at the packaging workshop of COVID-19 inactivated vaccine products of the Beijing Biological Products Institute Co., Ltd. in Beijing, capital of China, Dec. 25, 2020. (Xinhua/Zhang Yuwei)
China's self-developed vaccine on display at a factory in Beijing, Dec. 25. (Xinhua/Zhang Yuwei)
