1.The most reliable quality. 2.Good conversion efficiency of solar module. 3.Effectively minimize the power drop by the shade. 4.High-level protection for severe environment. 5.High quality glass provides for less reflection of incoming sunrays. 6.Warranty of minimal power output 98% at STC for 1 years. 7.Color of the back sheet: White & Black (custom-made possible). 8.Made in Taiwan