I really had no clues how

[KIBU]

I really had no clues how important is “rare earth” in until recently.

I wonder how much of an impact it will make in world trade. But here is an article of how it can affect one company:

http://www.freep.com/article/20101024/BUSINESS06/10240420/1002/Business/U.S.-China-trade-tensions-wont-blow-away