The expansion of the hottest e-book market in the

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The expansion of the U.S. e-book market may catch up with Japan

on Amazon, e-book sales have long surpassed traditional paper books. On July 17, 2011, Korean digital equipment manufacturer iRiver launched an e-book reader designed for Google, "creating more opportunities for industry peers to understand! Storyhd". This reader integrates googleebooks electronic for the first time

the development of nano rare earth materials can also be based on the national standard materials, which is the inevitable trend of the development of rare earth industry.

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