GOORUI Side Channel Blower are very similar SIEMENS. They were mainly for their safety, performance, convenience, durability and environmental impact.

This Side Channel Blower(ring blower, vacuum pump) are suitable for all those applications requiring considerably higher pressures than those can be achieved using centrifugal fans. Side channel exhausters are used in all those applications requiring an
operating vacuum higher than the one achievable by a fan, but not as high as to require the use of a vacuum pump. The rotating parts are not in contact with the casing. There is, therefore, no friction during operation, and thus no internal
lubrication is necessary. Gas moving through the machine, therefore remains uncontaminated and completely oil-free.

The other main features are:
1) Beautiful surface
2) Easy installation
3) Low noise level
4) No vibration, and therefore complete dynamic stability
5) Pulsation-free discharge
6) Minimal maintenance
7) Higher pressure ratio
8) Cooler running bearings
9) Longer grease life
10) Simple maintenance
11) 100% oil-free air
12) Suitable for environmental protection
13) Small dimensions