25W solar vertical fan (with solar panel)?? is an off-grid energy-saving device designed for home courtyards, balconies and outdoor scenes. It integrates high-efficiency photovoltaic power supply and intelligent wind control technology to achieve zero electricity cost operation and wide-area air supply, while taking into account durability and all-weather stability.Minimum order quantity: 500 Delivery time: 15-25 days Factory location: Zhongshan, Guangdong, China