Inverter market main body is gradually shift to set of string type, 21-25 years group string type inverter is expected to improve permeability series inverter costs with the change of technology and rapid decline, is now to centralized inverter cost cost decreasing accompanied by an expansion of the group of tandem application permeability Points area, set of string type inverter applied in eastern areas of the country has gradually been carried out At the same time, the distributed application field is gradually expanded and its use in power station is also rapidly promoted The proportion of group series inverters has been increasing year by year, which has increased to 60% in 2009. According to the data of CPIA, the proportion of group series inverters' shipment is expected to be close to 62% in 2010, 65% in 2011 and 70%

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