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Tungsten material is a s kind of strategic resources


From China Gov:

The National Development and Reform Commission (NDRC) held an expert symposium, saying the country will increase efforts to improve the industrial structure, protect the resources and raise the scientific and technological levels of rare-earth exploitation.

We should put more effort in scientific and technological innovation to raise the technological level of exploitation of rare earths, which is strategically important but nonrenewable.

Tungsten, WC, Cobalt, belongs to rare-earths industry, we should limit its explore.