Lijan Greentech is Manufacturer and Supplier of Turbo Roof Ventilator Fans. Roof Ventilator Fan's Performance Depends on Smoothness of Rotation, Neck Diameter and Wind Speed. Life of Ventilator Fan Depends on Materials and Quality of Construction. Green Roof Ventilators are Natural Way to Exhaust Pollutants. Roof Ventilators are Designed to Exhaust Hot Air and Industrial Pollututants Such as Dust, Heat, Humidity etc. from Buildings. Roof Ventilators are Economical, Eco-friendly and Light Weight and Suitable to any Existing and New Buildings.
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