Cooking fume can only be discharged after purification, and it can only be discharged after a test report issued by the local environmental protection department.

There are several characteristics of a high-performance fume purifier:

1. No fume can be observed with naked eyes;

2. Long-term stable operation with low failure rate;

3. The cleaning cycle is long, and the cleaning and maintenance time is fast;

4. After long-term operation, the discharge port and the surrounding environment will not be polluted;

5. The wind resistance of the purifier is low.