(2) EVA: Used to bond and fix the tempered glass and the power generation main body (cell). The quality of the transparent EVA material directly affects the life of the module. The EVA exposed to the air is easy to age and yellow, thus affecting the light transmission of the module. In addition to the quality of the EVA itself, the lamination process of the module manufacturer also has a great influence. Premature aging affects the component life of Solar Panels.