1. The design of the containerized large door is novel and unique.

2. The outlet of the finished product retains a suction port. After being connected to the air duct, it can remove minor impurities and has powerful comprehensive performance.

3. The screen drum can be disassembled, which saves costs and is convenient for maintenance.

4. Fixed and mobile options, widely applied;

5. The optional pneumatic air-blowing function can enhance the efficiency of impurity removal.