solar panel : 1,CE,ISO,TUV mono 60W to 280W 2, ... price performance ratio 3,high efficient 4,lifspan 25to 30years solar panel 200WSalient Features:Narrow Power Tolerance: ± 3%Schottky By-pass ... diodesHeavy Snow Load: 5400PaWarranty:Photovoltaic Module 10yearsOutput PowerMore than 90% within 10years More than 80% within ...