This unit features a durable, installation-free, and non-electric metal fuselage frame, along with a high-performance brushless fan equipped with an aluminum alloy impeller that delivers large air volume, high negative pressure, stable operation, low noise, and extended service life. The motor supports stepless adjustment via a manual knob to increase or decrease negative pressure and airflow. Its modular filter design allows for simple and quick replacement, while multi-layer filtration ensures high precision. Additionally, it comes with a 1.2m black universal suction arm (55mm in diameter) that offers 360° flexible adjustment, free hovering in any position, and high durability.