What do you suggest we do . . . buy American!? Pisshh!!
The truth is that most of the components like BMS’ coming out of china are of satisfactory quality, yeah they may not use the best quality electrical components, and they may go cheap on other parts, but for most of us who aren’t pushing our set-ups to the limit, they’re perfectly fine. If you end up beefing up your setup to cope with a more vigorous demand, it’s likely what you end up buying for it came from China in the first place any way!
The Chinese have had a lot of practice in getting electrical items such as PCBs right/correct over the many years they’ve been producing things like; the phone you’re holding, the laptop you’re viewing this forum on, the memory in your laptop, the SSD or HD your laptop’s using to run the operating system, the TV you sit down to watch every night, the ECU in the car you drive… need I go on?.. you can’t knock the Chinese for what they produce when you use their produce every day . . . and they’re much better and cheaper at it than most of us (countries) are.