Polycrystalline silicon is the direct material what produce the monocrystalline.It is the electronic information base material of the semiconductor device. Development of PV industry in China is very quickly from 2008.Polysilicon is not only used for photoelectric conversion，but again entered a rapid development period under the influence of the photovoltaic industry.

But Chinese photovoltaic industry catenary of whole industry nearly collapsed in 2012.The polysilicon prices decreased 52% more than in 2011.And in other words,Polycrystalline silicon was seriously affected under the influence of the photovoltaic industry. The polysilicon capacity will exceed 385000 tons, of which 70% belong to a few manufacturer in 2012.According to NPDSolarbuzz over the next few years terminal market demand likely situation prediction,these frontline providers can meet all the demand for polysilicon. 18 of 57 polysilicon manufacturers will exit the market unless the end-market demand far exceeds the projected demand in the next 18 months.In fact,even some inexperienced first-line manufacturers may not be able to survive in the coming years. The PV industry directly affect most polysilicon manufacturers to survive the environment continues to deteriorate.