There's lots of high quality Chinese stuff, too. Why do you say it as if quality and Chinese don't go together?
It's an old stereotype - between 1990 and 2010 or so, Chinese manufacturing was usually seen as of a lower quality.
This was often unfair and incorrect even then, but it's clearly mad now. Chinese products run the gamut from the lowest to the highest ends in almost every consumer field. But some people hew to old stereotypes.
When I go to any store, the Chinese version is ALWAYS lower quality. I've yet to see the opposite.
Historically, they're lax on regulation. Hence the association with bad quality.