80-90% of everything we use today seems to come from China. I hate that, especially, renovating houses and getting things at the big box DIY stores, seeing the faulty workmanship in products we have to open every box to inspect before heading to the check out counter.
Of course, there are dirt floor factories in China, and super-complex, hi-tech factories, where 250,000 people live and work. All under the same roof. It's mind boggling. Everybody on the planet is going to China to manufacture because China is simple. What do you want, here's what we do, money exchanged, done. No rules, regulations, and a thousand hoops to jump through like here in America, killing manufacturing.
Personally, I would inspect every element of a drum set from China before I accepted them. You think Yamaha would make sure product from China was top notch. In the beginning your prototypes might be fine, but after that you never know. China cranks things out very fast, which is a huge problem. They are literally drowning in money from the west, building cities so quickly it makes the head spin. Some are totally uninhabited at this point. But speed and quality do not always finish the same. I have seen that in dozens of examples of Chinese products I have purchased. Everything from electronics and tools to the boxes and packaging it all comes in.
I believe it is so tragic, if not destructive to economies, that so many nations are working with a brutal and persecuting nation to manufacture their goods. But such is the way of a world loving money - the root of all evil.
It is actually surprising to me to see Japanese companies having their goods made in China, all things considered, politically and culturally, but ... follow the money.