main usages: it is suitable for ventilating，air exchanging forindustrial and mining enterprises，agriculture，civil construction，textiles，chemicals，metallurgy, refrigeration equipments，etc..
* it adopts the advanced technology and designed based on the sf series to be the generation ii products.
* the blade adopts 3d optimization design，using aluminum alloy material，and the wheel hub is made of integral die casting.
* the impeller is formed by connecting the blades and the hub with bolts.the weight is light, quick start，large air volume, and high efficiency.
* the motor adopts an enlarged model，the appearance of which uses a 3d des咱n and better air flow performance.
* the transported medium is air and other gases that do not ignite spontaneously and are harmless to the human body and do not corrode the steel.no viscous material is allowed in the gas，dust and hard particles are not more than 150mg/m3, and the medium temperature must not exceed 60℃.