SDS series jet fan widely applied in subway(metro),highway,tunnel,dams project systems.There are 2 types in SDS uni-direction and reversible (bi-direction)axial fan. The thrust range up to 3500N,can be covered by fans range from 630mm to 1600mm.High efficiency and low noise jet fan can be selected under different load and work conditions.It have good performance in anti-corrosive,reliablility,and economics.