... : AM1.5,1000W/m² 25Csolar panel materials1. solar cell------monocrystalline solar cell 156*156mm2).front glass-------3.2mm, high transmission, low iron, tempered glss3).EVA-------excellent ... rated, high quality, with diode protectionSuperiority: high quality anodexed aluminum frame, high efficiency long life, easy installation, strong wind resistance, strong hail resisance.solar panel warranty ...