According to https://azure.microsoft.com/en-us/blog/announcing-azure-location-based-services-public-preview/, Azure location-based services public preview on 11/28/2017 which is good, as a China developer, I'd like to know if it's supporting China map?
Azure Location Based Services will not be available if your current IP address is in below countries.
However we have maps of those countries available. If your current IP address is not in China you will be able to access China map.