1.Have economy , practicability. 2.With high efficiency , with low noise 3.Set up / assemble simply , easy to use. Characteristic1. ... electrical machinery device and rational organism With high efficiency , with low noise . The waterway position adopts special-purpose processing, not only ... . 3.Set up / assemble simply , easy to use. Adopt new-type technological design, is it assemble easy to make, it ...