Good point about cheap parts. It is a given nowadays, however, that most electronic parts in gear from all countries have majority origin in China sadly, yet some are better than others and implementation is key.
No one in Japan will use Chinese parts in their tube amps design. I got Japanese amp myself (Yamamoto A-08s).
But I’ve seen clones of everything in Russia, they steal design of phono stages, amps, whatever. It’s a Russian tradition since the Soviet days, original designers never get their royalties. Same happened with foreign musicians who’s records bootleged in USSR by local pressing plant and sold in million copies.