Industry
Blowers, axial flow (helicoidal), Heating, ventilation, air conditioning (HVAC) and refrigeration equipment, Construction, Fans, tangential or cross flow, Industrial blowers, Fans and ventilators, radial (centrifugal), Fans, noiseless, variable flow, industrial, Fans and ventilators, axial flow (helicoidal), Fans and ventilators, Blowers, radial (centrifugal)