Adopting film laminating process, the weather-proof layer was used PVDF film. It has excellent aging resistance to various environmental factors, such as UV, high temperature, serve cold, moisture, etc., and it also has strong resistance to acid, alkali, solvent, salt and other chemicals.

High hydrolysis PET is used as the base material. The backsheet still has the excellent flexibility after 3000 hours aging test under 85℃ and 85RH. There are no degradation and crazing with the backsheet.

Unique glue formulation makes the high adhesion between the layers, there is no delamination, air bubbles and edge shrinking with the backsheet after 2000 hours aging test under 85℃ and 85RH% to ensure 25 years outdoor life span of the solar module.