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Solar companies grapple with shortage of key material

Price spike comes after environmental crackdown in China coincides with annual lull in polysilicon output

New York

SOLAR manufacturers are being battered by higher costs and smaller margins, after an unexpected shortage of a critical raw material.  Prices of polysilicon, the main component of photovoltaic cells, spiked as much as 35 per cent in the past four months after environmental...

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