Choosing up the twigs, leaves and trash which can be blown out in the panel and reducing the branches that cover the panel as suitable โครงสร้างยึดแผงโซลาร์เซลล์บนหลังคาให้มั่นคง In the case of the roof that will be installed being a metallic sheet Or tiles or what ever will be the purlin structure https://bluetechsolarcell.com/solar-rooftop-%e0%b8%82%e0%b8%ad%e0%b8%99%e0%b9%81%e0%b8%81%e0%b9%88%e0%b8%99/