POLY CRYSTALLINE Aesthetic appearance with excellent efficiency based on innovative photovoltaic technologiesHigh quality, strong aluminum frame, passing mechanical load testing 5400 Pa and wind pressure 2400PaTUV,IEC61730, CE, PV CYCLE MONO CRYSTALLINE Nominal 12v DC For standard outputHeavy-duty anodized framesHigh transparent low-iron, tempered glassRugged design to withstand high wind pressureHail and snow loadAesthetic appearance