Latest Samsung Galaxy Tab A7 10.4 (2020) (SM-T505C) - CHC firmware
Samsung Galaxy Tab A7 10.4 (2020) (SM-T505C) firmware for China (Open China) (CHC): 1 build in the SamMobile archive, newest first. The latest is T505CZCU2ATJ6 (Android 10, built 23 October 2020). Open a build to download it, or switch region with the country selector.