https://perennialinvesting.files.wordpress.com/2015/11/112.p...
But hey, they finally managed to make a ballpoint pen so they'll probably be making their own jet engines any day now: https://www.washingtonpost.com/news/worldviews/wp/2017/01/18...
On a side note, since you posted that figure, how many components of a Boeing 787 are made by a US company[0]? =)
[0]: http://www.businessinsider.com/boeing-787-dreamliner-structu...
Disclaimer: Chinese here.
It requires extremely sophisticated metallurgy and advanced industrial processes to reliably produce such an advanced object and it's a pretty big deal that China's become the 3rd country in the world to start manufacturing pen tips at scale.
As for electronics, I think most of them were made in Best China, aka Taiwan.
Anyway, addressing your implied point, the fact that mainland China (Worst China) can pump out garbage cheaper than most other countries doesn't imply they can build an airplane I'd willingly board.