> Can't believe that China would allow this given all they have to lose. They don't. It's already illegal there. Factories creating that gas are doing so in s

> Can't believe that China would allow this given all they have to lose. They don't. It's already illegal there. Factories creating that gas are doing so in secret and are unregistered. Licensed factories secretly using that gas appear to be good at evading the discovery of that fact by authorities, partly due to corrupt inspectors. It's mentioned in the video in the linked article.