Just to add to that; here is what we have over China.
1. China is the largest user of niobium in the world! China accounts for currently 30% of world demand and rising.
2. China can't produce any niobium! they import 100%! It's not very often that the tables are turn on the Chinese, as we know they produce 95% of rare earths and cut exports at their whim, controlling the price to friend or foes, etc.
" The West Must Look for a Secure Supply of Atomic 41" good little story if interested, just Google.
Cheers.