Good characteristic:

1. High utmost vacuum rate, it can be less than 0.5mbar;

2. High deflating speed;

3. Low noise while working, lower than 67 db;

4. Reliable structure to prevent oil circumfluence;

5. Strong capacity in deflating the vapor;

6. Keeping inlet air pressure 1.33*103Pa, it can be still working on.

7. Protecting environment; an oil fog clearer is set in the vacuum, and no oil fog in the exhaust air;

8.Tight structure, scientific and reasonable design, and it is easy to install in the industry system.