China, in order to counter the Covid-19 criticism, has for the first time put its homegrown coronavirus vaccines on display. A representative of Sinovac, producer of the vaccine candidate told AFP his firm has already "completed the construction of a vaccine factory" that is able to produce 300 million doses a year. High hopes hang on the small vials of liquid on show at a Beijing trade fair. China, which is facing a storm of foreign criticism over its early handling of the pandemic, is desperate to change the narrative surrounding the pandemic.