Cool, Toshi.
Great Wall is from the same parent company as Dragon and Hobby Boss.
A couple of things. I haven't bothered to get down a book, but if you use the decals you have there, it's possible if not probable that they are for B models.
EDIT: 25502 is an A, 25525 probably (need the book)
239525, 239532 and 25554 are all Bs.
The B is a much different airplane.
Second, there's no such thing as a glass nose, and I have no idea where GWH got the idea. There was a fiberglass nose, but thats a different animal. It was painted, either o/d or black. Some of the photos of the prototypes with the sun behind them make it look translucent, but it wasn't. I'm pretty sure the 25502 had a black nose, on an o/d aircraft, but that could easily change.