Hello. I am bullish for lithium, but one thing bothers me. Often, it seems a reputable foreign stock is readily available to the USA investor as a "pink sheet" listing. But I don't fully understand how "pink sheets" work.

Galaxy Resources appears to be a reputable Australian mining company. Their website proclaims: Galaxy Resources Limited (ASX: GXY) is an international S&P/ASX 300 Index Company. (galaxyresources.com.au)

In my USA brokerages, I find Galaxy Resources listed as GALXF. Is this just the same? Or would I be well advised to open an account in Australia?