Chinese maybe (unless they have continuous oversight, they turn out some junk but with oversight, their products are just fine. Good example is Makita power tools. Most are made in China but Makita (Japan) has strict oversight on the products.
No issue with South Korea. Look at Kia with their 10 year unlimited mileage warranty. You don't offer that kind of warranty unless the product is first class and Japan, Japan passed the USA in overall quality decades ago.
We suck hind tit here... Our own fault too. I'd love to see an Oriental company start building RV's. Would be a heck of a wake up call for tne domestic builders.