Or are they gonna blow up in my face like some of the cheap china made ammo?
If your gun isn't 200 years old I doubt this is an issue. If it were the case, there is no way they would import the ammo. They would have a serious lawsuit on their hands.
It may cause your gun to gum up since the cases may have lacquer on them, but besides that, they should run fine. Be wary of their dirtiness though. Clean your gun well after your done.