Shenmeiyi pipe exhaust has been a strong wind ventilator products, series of specifications is very homogeneous, and in products from many excellent, all-metal series can be described as one of the most dazzling star, it is the first use of outer rotor technology, ventilation products. External rotor motor performance, stability, inertia, smooth operation, wear, long life, manufacturing technology and the conditions are very high. External Rotor Motor marks the successful use of ventilation fans into a new technology era. All-metal series of ventilation fans at the same time with the wind wheel design, the same amount of wind speed greater; Body slim, beautiful appearance; Fire performance is strong; Every product performance testing through the computer balance. The more performance tables, with incomparable advantages.