Wind Turbine Ventilators Exactly as the Name implies are Powered by the Wind to Create Effective Ventilation for Different Industrial and Commercial Buildings. These Roof top Ventilators Work on Wind Assisted Ventilation. Lijan Greentech India Pvt Ltd is a Well Known and Best in Roof Ventilator Supplier and Service Provider in Kerala. Roof Top / Wind Turbine Ventilation Fans are Suitable for Ware House Ventilation, General Ventilation, Commercial Range Hood Exhaust and More. Wind Turbine Ventilator is a Good and Effective Solution for Reducing Heat or Temperature Inside Buildings. We are One of the Best Roof Ventilator Supplier in Ernakulam, Thrissur, Kollam, Kozhikode, Kannur and other Places in Kerala.