Good question. I think China is undoubtedly far better than the US at advanced, cheap mass-production. So wouldn’t be surprising they could do that for the military too. Not to say the US couldn’t get better.
Better than the US at producing almost anything at this point. There are a few tiny islands of advantage left for the US in advanced engineering but they won’t last.
Prediction: China will win the new race to the moon for this very reason.