It's not a BEV38, it's a SWB6129BEV68G, still an iEV12.
S2Y use Siemens motor, S2Z use Prestolite motor.
You can find more info about this bus here: https://buspedia.top/bus/pfnipj

Thanks for the link and information, there will be something to read)

In Chengdu we also have electric buses, with very similar design.

Hello, does anyone have the official technical data sheet for any of these Sunwin bus part numbers: SWB6128BEVLF SWB6128BEV