Lijan Greentech is Manufacturer and Installation Service Provider of Turbo Roof Ventilator Fans. Proper Ventilation is Essential for any Industry to Provide Safe & amp; Efficient Working and Healthy Environment to Human Beings. Ventilation is a Process of Removing Hot Air and Providing Fresh Cool Air. Turbo Ventilator is Always Better Option to Ventilate the Buildings which Doesn’t Require any External Power. Turbo Roof Ventilators Balance the Temperature, Oxygen and Removes Harmful Products such as Dust, Smoke, Bacteria etc. Turbo Roof Ventilators Operate on Natural Wind Energy. Hence it is Cost Effective in Respect of Operation and Maintenance.