Given that China hosts all the major contract manufacturers in the world, there is only a few products of any brand that are not produced there. The design of those products also includes significant to dominant Chinese engineer’s work.
So if you perceive a difference in quality, it’s probably dues to small design houses (many in China, but not exclusively) and not geography.
So if you perceive a difference in quality, it’s probably dues to small design houses (many in China, but not exclusively) and not geography.