I have two Norinco .45 pistols. I have put about 5000 through one and about half that through the other with no (that's 0, as in zero) problems of any kind.
As Jim V says, they are boring. They just feed, fire and eject. Nothing like the stuff folks love to write about on the forum. No pieces breaking or falling off or falling apart; no rounds pointing at the sky; no magazines falling out. Just monotonous regularity, round after round. And same recoil springs, which check as strong as ever.
Further, the 5000 round gun shows no significant wear, anywhere.
I bought both used, so the Chinese already had their money.
Jim