Yes I remember when they banned CFCs.

And they seem to be correct about that. The ozone layer has been badly damaged, and the impacts on people and wildlife have been noticed.

And yes, China's system lends itself to breaking rules, as people within or close to the party are used to being above the law. I suspect that there's not a national policy of destroying the environment, but they're certainly less enlightened than the developed nations ... (at least now that the US has some rationality to their leadership).

And I do note that the ozone damage showed up primarily in the southern hemisphere, where China wasn't directly affected. And that their over-fishing is concentrated in marine reserves a long way from China.