The structure of solar modules Cells The high-efficiency of mono and poly solar cells ensure adequate power for panels. Glass Low iron tempered glass, 3.2mm thickness with high reflectivity. Eva Higher transmission rate, antioxidant capacity and temperature resistance, no expansion or contraction. Back film Increase efficiency of modules sightly and reduce module¡¡¥s temperature. Aging resistance, corrosion resistance and airtight. Frame Using the framework of the anodized aluminum frame with high intensity, mechanical shock resistance capability. Functional features 1 applies to commercial, residential applications for on-grid and off-grid applications. 2 produced with strict quality control standards and a worldwide certification program. 3 easily installed on the ground, roof, building face or tracking system. 4 reduces electricity cost and creates energy independently 5 modular, no moving parts, fully scalable and easily installed Warranty 25 years warranty for 80% of output10 years warranty for 90% of output10 years limited mechanical warranty Carton and pallet.