1.It can be in service under the condition of no working medium (no oil) and will not produce any pollution. Moreover, there is filtering material in the air exchange bin of the body to guarantee the air clean.

2.New technologies and materials are used in production. it is easy to move and can work smoothly, which can guarantee the ideal vacuum and high rate of air flaoing.

3.It adopts the operation containing no friction, producing no calories and having no friction exhausts, The diaphragm is made of nitrile rubber, which resists the corrosion and has long operating life.

4.The self-cooling air draft system is designed in the body. this system can keep the machine continuously running for 24 hours.

5.The pressure can be regulated by a valve to meet various vacuum needs within certain range.

6. The axletrees are classical, which are imported abroad. They have the features oof steady running,low noise and high operating effciency.

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