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The company's SF-C-axial fans specifically for the production and export, the company strictly in accordance with the production of explosion-proof electrical requirements to produce fan, insulation class to class F. Through the shell and technological improvements, improved motor performance of the seal. Therefore this product can be relatively high humidity or temperature of the environment to use (the temperature not exceeding 70 ℃). This product has low noise, air flow, a smooth operation, for a long time and so on. The use of single-phase 110 V voltage, three-phase 220 V voltage and frequency of 60 HZ. Widely used in the hotel, bath center, industrial and mining enterprises, civil establishments, such as the exhaust and ventilation.