Per this CNN story from Dec 2:
- China currently has five coronavirus candidates from four companies which have reached phase 3 clinical trials, the last and most important step of testing before regulatory approval is sought.
- Because China has largely contained the virus, there's no urgent need to vaccinate every one of its 1.4 billion population.
- Compared with Pfizer and Moderna, Chinese vaccines have a crucial advantage -- most of them do not require freezing temperatures for storage, making transport and distribution much easier, especially in developing countries that lack cold storage capacities.
- In October, China joined a World Health Organization-backed global initiative to ensure the rapid and equitable distribution of Covid-19 vaccines to rich and poor countries alike.