Shanghai SMWMOTOR Technology Co. Ltd. is a manufacturer of external rotor motors. SMWMOTOR is devoted to developing high-efficiency, energy-saving and environment-friendly technology and products. Our production area covers 12000 m3, with 5 production lines annual production capacity is six hundred thousand units, total employees is 120 and 12 engineers for AC and EC. Within standard testing lab we could test fan airflow and noise level.Our main product is EC external rotor motors, those motor could be use to power centrifugal fans, axial fans. Our product could be widly used in Freshair system, air purifier industry, FFU,Air conditioning, Ventilation, Heat pump.All our products have passed CE, RoHS certificates. We have first-class R&D equipment, advanced manufacturing equipment and experienced experts, we are in a position to provide ventilators to satisfy you very well.