Sun Arch Industries, a decade old company equips warehouses, workshops, factories and other enclosed structures with wind driven turbo ventilators. To be installed on roof-tops, these ventilating devices continuously rotate with the wind and pull out the inside air, which can be hot, stale, humid and can contain pollutants in an industrial environment. When using multiple ventilators, owners do not have to pay any operating and maintenance cost. These turbo ventilators can be installed without wiring work and electricity connection. And once installed, immediately starts working without creating any noise. The life expectancy of such wind driven ventilator is over 10 years. Aluminum, zinc coated steel and GI material are used used in the making of these ventilators.