Roof Exhaust Fan By Qingzhou Yongsheng Machinery Co., Ltd

Blessed with a team of dexterous professionals, our organization "Qingzhou Yongsheng Machinery Co., Ltd" counted as leading Exporter, Manufacturer & Supplier of Roof Exhaust Fan in Qingzhou, Shandong, China.
Blade Material: Stainless Steel
1.No power ventilation fan use natural wind driven or air heat convection caused by Indoor and outdoor temperature difference to push turbine run, then exhaust the indoor not fresh air by centrifugal force and negative pressure.
2.Curved blades are the best results of scientific calculation and it can ensure no rainwater intrusion.
3.Unique variable angle tube suit for any industry workshop, poultry farm, high building,residential houses etc. Better improve work environment and enhance work quality and efficiency.
4.Nature wind drives,operating in 24hs the whole day. Environmental protection, energy saving andA no electricityA cost.