Introducing our latest innovation - The Wind Opens Ventilation Window Automatically! As a factory, we are proud to present this product that will revolutionize the way you enjoy fresh air circulation in your home or office. This unique ventilation window automatically opens and closes in response to the wind, providing efficient and natural air flow throughout the day. Made with high-quality materials, this product ensures optimal durability and performance. Say goodbye to stuffy rooms and hello to fresh air, with The Wind Opens Ventilation Window Automatically!