Nice to see them doing something like this.
Now it would be nice if they could coodinate with the next two biggest producers, Russia and Tajikistan, the three of whom toghether have almsot 90% of the world's production, to also do something similar in exchange for investment. Or perhaps it might be better to just do the same restriction to another important resource.
There were also some very uncofirmed talks about China stopping drone parts exports too, which if they really did could have a massive impact on west.