these photovoltaic panels can be used individually or associated, serving energy systems of different sizes and providing electricity for all kinds of application. FEATURES: 1. High-quality guarantee using 156 mm high conversion efficiency crystalline silicon solar cells. 2. High-performance bypass diodes minimize the power drop caused by shade 3. High transmittance, low iron tempered glass; High-performance EVA; A weatherproof back sheet and sandblast electrophorus is aluminum frame extend the application of modules greatly 4. 25-year limited warranty on power output and performance 5. Sealed, waterproof, multi-functional junction box gives a high level of safety.