Rare earth element Terbium was first used in a product called the soundbug

In case you are unaware, the soundbug is a unique little speaker that turns any flat surface into a flat panel speaker for which the rare earth element terbium was first used commercially.

For more information on the rare earth element terbium visit our London Commodities Market website at http://londoncommoditymarkets.com/rare-earth-elements.php