This is just like a few YouTube videos I came across a while ago that have models of Chinese high speed trains (CRH3, CRH5, etc.) in Trainz and they're pretty hard to find, even with Google searches (getting results with only Railworks/TS2018 and MSTS CRH stuff).  I do hope to see more Chinese models become widely available to everyone outside of China, but I don't think it'll happen soon.  You're pretty much in the same situation as me when it comes to the China high speed rail stuff, but there's nothing we can really do about it.