I’ve tried wherever possible to stick to the “If it ain’t Boeing, I ain’t going” motto, but it looks like I’m going to have to add “except for the new narrow-body 737” after the word “Boeing”. I’ve seen the kind of assembly quality that Chinese machinery has, and I’m not about to trust airplanes they’ve built.
Planes finished in China are bound for the Chinese domestic market or other Asian carriers (with the exception of Japanese or Taiwanese). Unless you’re planning on flying domestic in China - which I have done on several occasions - you don’t have much to worry about.
We had a Chinese counterfeit problem in the Army, with soldiers having to parse through shady looking parts for the Boeing Apache, I cannot imagine flying Boeing even in the US, knowing contractors could get parts from these China plants or knock offs thereof. Very scary