Inside the company at the forefront of China's push to develop a coronavirus vaccine

Inside the white, sterile walls of a new building on the southern outskirts of Beijing, two employees donning masks and rubber gloves are busy pipetting a clear, colorless liquid into rows of small vials.

source https://www.cnn.com/2020/08/26/asia/sinovac-coronavirus-china-vaccine-intl-hnk/index.html