1. Pump type impeller: Has the characteristics of high motivity, and oxygenation rate.
2. Gearbox: Two-stage transmission made up of spiral cone-shaped gear and columned bevel gear is used for the horizontal gearbox. Three-stage transmission made up of columned bevel gear is used for the vertical gearbox. All gears have hard gear face and high precision.  The gearbox has the characteristics of stable transmission, low noise, high mechanical efficiency and reliable operation with designed service life of more than ten years.
3. Impeller Lifting Mechanism:  It is installed on the side faces of the gearbox for the horizontal type.  Immersion depth of the impeller can be changed in order to adjust the oxygenation rate within a rated range. For the vertical type, flat style lifting mechanism is used. The immersion depth of the impeller can be changed by adjusting the lifting platform with a screw rod.
4. Electric Motor: Y series outdoor sealed 3-phase AC motor.  Energy efficient and reliable.
5. Speed regulating device: Frequency conversion device is used for the stepless adjustment of the motor speed.  This method is very energy efficient.