Sales aren't everything. China has ~44M Metric Tons of REE reserves, Vietnam 22M, Russia 21M, Brazil 21M, India 6.9M, Australia 4.2M, USA 2.4M, Greenland 1.5M.
However, specific metals out of the 17 have wildly different graphs, such as Palladium commonly used in military armored plating being produced mostly in Russia and South Africa. USA produces many times over as much Palladium as China reports.
If China's domestic use concerns are actually for military use then that's troublesome because the metals they have are more useful for automation and electronics than anything else.