High damping limp propeller
High efficiency to diameter ratio and low weight axial flow fan
High efficiency, axial flow fan for use in an automotive cooling
High efficiency, low noise, axial flow fan
High speed, low torque axial flow fan
High strength fan
High-flow low torque fan
High-pumping fan with ring-mounted bladelets
High-pumping, high-efficiency fan with forward-swept blades
Highly slenderness rotor