China makes a ton of incredibly specialized shit. If you want a custom done hub-motor, you go to China to get it done. If you want some really specialized lens, China is also a good bet. China is already creeping up the really specialized boutique shit. Like just yesterday a big YT channel wanted to turn an old motorcycle into an ebike, so they called up a factory in China and gave them the specs and they made them a custom-done motor for that exact motorcycle. Or if you need to get a custom battery management IC or motor controller that only you are ever going to use you can often just hit up the factory and they don't even charge that much for custom orders a lot of the time.
China makes a ton of incredibly specialized shit. If you want a custom done hub-motor, you go to China to get it done. If you want some really specialized lens, China is also a good bet. China is already creeping up the really specialized boutique shit. Like just yesterday a big YT channel wanted to turn an old motorcycle into an ebike, so they called up a factory in China and gave them the specs and they made them a custom-done motor for that exact motorcycle. Or if you need to get a custom battery management IC or motor controller that only you are ever going to use you can often just hit up the factory and they don't even charge that much for custom orders a lot of the time.