In my experience, both Chinese and Taiwanese companies respond exactly to specifications.
Whatever you want to produce, they're ready for you. You can produce guns, hacksaws, chain, railcars, gi-normous cranes or tiny tin cups. And they'll produce your product exactly as you tell them to.
You can go to either place, specify junk, and get junk. They'll be happy to grind out ten thousand, a hundred thousand or a million pieces of your junk, and every piece will meet your specifications.
You can also go to each country, set extremely high specifications, (like, for instance, Apple does) and they will meet your specifications, and your product's quality will be exactly what you specified.
These days, low quality coming out of Taiwan or China has nothing to do with them. It has to do with what was specified.