China has much stricter control over phone #'s and identities than USA/EU does. It's much more difficult for me to create a placeholder digital identity in China. I wouldn't love that solution, but it exists.
As a result, it's very difficult for me to use a lot of Chinese websites and it's a pretty sizable barrier to hardware development when Chinese citizens can just download the relevant datasheet off some Chinese forum in 5 minutes, but I have to sign NDA's with western companies or figure out how to WeChat a Chinese OEM to send me their datasheets.