People who work in solar industry may hear about double 85%test,it's strict material,workmanship test to show the panels can still work properly or has longer lifespan in extreme climate.

Nowadays,flexible solar panel is more and more widely used,with SunPower back contact cells or conventional solar cells,the SunPower back contact cell flexible solar panel is the most popular in the market.It has unique back contact cells and higher cell efficiency.Flexible solar panels are for camping,RV rooftop,marine,boat,yacht,different application will differ in installtion as well.