Green energy
UMG silicon prices said to have fallen to US$30/kg
Nuying Huang, Taipei; Adam Hwang, DIGITIMES

International spot quotes for upgraded metallurgical-grade (UMG) silicon, which has been considered to be a candidate to replace solar-grade polycrystalline silicon (poly-Si), have been dropping sharply, from US$100/kg in 2008 to US$50/kg in the first...

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