Application: Applicable to drive all kinds of general machinery and equipment, such as compressors, fans, pumps, and other mechanical equipment, but also in the oil, chemicals, medicine, mining, etc. Features: High efficiency, energy saving, attractive appearance, convenient operation, perfect structure, little vibration, low noise. Circumstance for use: The altitude not exceeding 1000m above sea level. The ambient temperature subject to seasonal variations but not exceeding +40'℃ and not less than -15℃.