We, Gi-Power. Is one professional solar panel manufacturer for 8 years. Product range is from 0.5W to 320W solar panels. Use TOP brand with good quality raw materials. - Solar cells -- Taiwan Wafer made solar cells, NEO brand. - Back sheet -- Taiwan TOP brand: Taiflex, anti-UV , 0.35mm TPE. - EVA -- 3M or First - Glass -- Xingyi Glass, 3.2mm low-iron tempered glass - Al. Frame -- 1.4mm thickness