high efficiency: Q-cell solar panel mono or poly: 1W to ... areas of solar energy.Materials of solar panel1. Solar cell------conversion efficency of solar cells: 24%-17%.2. ... Front glass------3.2mm, high transmission, low iron, tempered glass.3. EVA------excellent ... 6. Junction box------Ip54 rated and Ip65 rated, high quality, with diode protection.Operated setting of solar panelMaximum ...