Specially designed telescopic flexible suction arm, 360 degree rotation, can be stretched to any position, starting from the source to effectively remove dust and reduce air pollution. Integrated and efficient filter, welding fumes (0.3μm) up to 99.97% filtration efficiency, and can maintain a high gas flow. According to the nature of the dust we select the appropriate filter media to meet the different nature of purification dust. Compact structure, small size, even in a narrow working space may be used. Installed casters, moving light and flexible. Worm fan with a high-performance, suction volume, low operating noise. Excellent absorption stability. Equipment is simple, easy maintenance. No secondary pollution, does not affect other operations workshop.