Harbin Z-9 civil versions

[Retrofit]

I am looking for information about the Harbin Z-9 helicopter civil versions.
On the different websites I have consulted, several denominations are mentionned but I don't know how that are related each others and which ones are truly "civil transport" or just "army transport"?
These denominations are:
- The H410 and H410A
- The H425
- The H450
- The AC312, AC312A and AC312E
Also interested about the engine types (i.e. Arriel or WZ-8) powering the different versions

Photos sources: Airliners & PPRuNe Websites.

Thanks in advance