It's a piece of mass produced machinery, not a one-off masterpiece of art. If you make the same parts out of the same materials and put them together then it's the same machine. It doesn't take on a German character because German people assembled it, or Chinese if they do - it's just inert pieces of metal. If it has any character that is due to the people who designed it and chose how it would work and go together, which is unaffected by who makes it.
Certainly, the Chinese could never make a chainsaw: http://www.space.com/23938-china-moon-rover-landing-lunar-prospecting.html
Only a fool underestimates their competition.
So, just to be clear you're saying all goods manufacture in China are of equivalent quality to their American or European counterparts just because the Chinese have a space program? I'm going to have to respectively disagree.