“In China, AstraZeneca reached a licensing deal with Shenzhen-based firm BioKangtai. Under the pact, BioKangtai has exclusive rights in China to clinical development, production and commercialization rights to the vaccine.”
https://www.iol.co.za/news/world/covid-19-vaccines-where-they-are-produced-and-how-they-will-be-distributed-071b5781-3641-487a-b78b-15a04deef871