Lijan Greentech’s Green Roof Ventilation Fan is a high-efficiency, wind-driven roof ventilator designed for industrial, commercial, and residential buildings. This zero-power turbine ventilator operates without electricity, using natural wind and thermal uplift to remove hot air, humidity, and stale air, ensuring superior indoor air quality. Built with corrosion-resistant materials, it guarantees long-lasting performance with minimal maintenance. Ideal for factories, warehouses, and green buildings, it reduces heat buildup and energy costs. With multiple models and customizable base options, it offers a reliable, eco-friendly solution for modern roof ventilation and air extraction needs.