1.Low noise 2.Extensive use 3.Reasonable structure, small volume 4.long life 5.High efficiency, big air volume Specification:Roots fan is widely used in wastewater treatment, aquaculture, pneumatic conveying, vacuum packing, coal washing, combustion and pressurized, casting, mining, metallurgical, chemical industry, light industry, building materials, electricity, flour, sandblasting, vacuum, etc ...