1. 360° Free Rotation: The stepless buckle positioning mechanism is designed to prevent the airflow regulating valve from sagging during fixation. This effectively blocks exhaust gas and dust from leaking out.
2. PP Material: Exhibiting excellent resistance to corrosion, acids, and alkalis, the PP material ensures a long service life.
3. One-piece Injection Molding Technology: Through one-piece injection molding technology, the product features high structural strength, eliminating the risk of bottom detachment.
4. Multi-layer Coated Surface: The surface undergoes anodic oxidation treatment. This treatment endows the product with the ability to withstand high temperatures of up to 1000 degrees Celsius and significant impact forces, while also making the coating highly resistant to rust.
5. 2mm Thickened Inner Wall: The 2mm thickened inner wall enhances the product's sturdiness and durability, thus extending its service life.

Precautions：
1. Installation and Positioning
Install the equipment in a location close to the pollution source. Ensure that the air intake port is not blocked. Adjust the height and angle according to the experimental requirements, enabling the air intake port to be as close to the pollution source as possible. 
2. Operation Specifications
When adjusting the position, move gently to avoid strong vibrations. Keep the equipment away from high - temperature environments to prevent damage to the device. 
3. Air Volume Regulation
Regulate the air volume rationally according to the intensity of the experiment to avoid excessive air extraction. 
4. Equipment Inspection
Regularly inspect the appearance, sealing performance, the operating condition of the fan, and the clogging situation of the filter. 
5. Safety Protection
Experimental staff should wear personal protective equipment to avoid direct exposure to harmful gases or dust. 
6. Maintenance and Servicing
Regularly clean the equipment, lubricate the universal joint of the arm, and calibrate the air volume.