China supplies itself
and will continue to do so. China is smarter than the West, i.e. it realizes it must not become dependent on others who might turn out to be enemies in the future. China is smart enough to base its BESS on domestic resources.
That's why the Vanadium price remains in the gutter while several gigantic VRFBs have been announced. They are all located in China who uses its own Vanadium. Be self-sufficient, remain Independent.