Green energy
UMG silicon prices halved to US$50/kg
Nuying Huang, Taipei; Adam Hwang, DIGITIMES

International quotes for upgraded metallurgical-grade (UMG) silicon, a substitute material for solar-grade polycrystalline silicon (poly-Si), have fallen from the highest level of US$100/kg in 2008 to US$50/kg currently, according to industry sources...

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