BPF Series Photovoltaic Backsheet are coating type Backsheet for Modules Encapsulation developed newly by Betterial Corp., with three layers structure. The core layer is made of hydrolysis-resistant BOPET film, and both the surface layers are made of weathering-resistant fluoropolymer coating. They have excellent performance in many respects, such as reflection, adhesion, wear-resistance and weathering-resistance, and then have a wide range of applications including distributed power station and terrestrial power station in desert area with strong solar radiation and strong wind and sand.