Gantan Beauty Industry Co., Ltd. engages in the manufacture, sale, and contracted design of metal roof products. It also provides photovoltaic generation systems and waterproof sheet roof materials. Its products include solar panels, top lights, green roofs, horizontal and vertical metallic roofs, panel roofs, and folded sheet roofs. The company was founded by Motokatsu Funaki on April 10, 1965 and is headquartered in Kanagawa, Japan.