Though, if you look at, say, the repeated cooking oil scandals in China
... or melamine-in-milk scandal. But one thing to remember is that sheer size of China (and population thereof) causes an observation bias. For example, in Finland, population 1/500th of China, we had, in 1970's, this case of margarine manufacturer harvesting stray cats and putting them in margarine. Yet, no one knows Finland as country of faked oil scandals; we have this one isolated case. But given the ratios of populations, you could have 500 (!!) of such incidents in China and still it wouldn't be any worse than Finland in this regard (simply speaking).
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I mostly have not much to complain with China. You can buy well engineered stuff, and you can buy total crap. One thing which I like is availability of some modestly decent, OK-ish engineered technology which do the job, does not cost an arm and leg,
is available to buy without a massive process of middle managers having to talk to other middle managers. Many Western counterpart are not only expensive and hard to buy, but also fail to operate because of arrogant development attitude of the engineers and overbloated software engineering practices (Chinese software held together with bubble gum may not be nice, but
it works.) For example, I can buy a hybrid solar battery inverter designed and manufactured in China, and control it via MODBUS within 5 hours of testing and some personal spot-on assistance over email, but if I try to do the same with a German manufacturer, I get a defective product which crashes, and the support not able to do anything but, after weeks of middle managers talking with other middle managers, try to suggest some workarounds which might or might not work.
Then again, I don't like the idea of China having so much dominance on so many markets; but it's more like just generic "don't put all the eggs in the same basket" thinking; more pragmatic than nationalistic. As a result, if I can get an
equally good Western product for, say, 50% more cost, or a significantly
better Western product for, say 100-200% more cost, I tend to choose it. But if China sells me a working product for 50% less cost than a crappy joke by a Western company, I obviously choose the Chinese one instead of bankruptcy.
In other words, I will give some bonus points for not being Chinese, not for the hate of China, but for
balancing the risks long-term, but the extent I can go to is very limited, and for any significant different in either price and/or quality, China will win.
And most often, China wins
in quality. This seems to be impossible for some people to realize. Especially there is much more to quality than some finishing of some mechanical surface. Having a shiny appearance is of no value, if the quality of the
process of buying the product is made shit, or if software is shit, as usual in too many Western products developed using modern-day software science paradigms.