1. Material: aluminum, specific as per customers demand; 2. Specification: various sizes available, specific sizes can be tailor-made; 3. Package: carton, specific as per customers requirement; 4. Characteristics: high precision, good balance performance, low cost, fast delivery, satisfying service; 5. Standards & Certificates: ISO9001, ISO14001,RoHS,etc. 6. Application: widely used in vacuum cleaner motors; ideal for heating, ventilating and air conditioning systems (HVAC); applied on ventilation facilities and other air handling units(AHU), etc. 7. We can produce any practical materials and specifications as per your sample or technical drawing. For more, please feel free to visit our homepage or contact us any time.