Yes it is. Chinese Sinovac CoronaVac uses the conventional attenuated whole virus method.

As an inactivated vaccine like BBIBP-CorV and BBV152, CoronaVac uses a more traditional technology[33][8] that is similar to the inactivated polio vaccine. Initially, a sample of SARS-CoV-2 from China was used to grow large quantities of the virus using vero cells. From then on, the viruses are soaked in beta-propiolactone, which deactivates them by binding to their genes, while leaving other viral particles intact. The resulting inactivated viruses are then mixed with an aluminium-based adjuvant.[34]