Performance: The shell is made of high quality cold-rolled steel, the surface electrostatic spray or paint or stainless steel plate; ensure jet velocity airflow to prevent the generation of eddy currents; appearance; simple structure. The main performance parameters: 1, the purification efficiency: efficient ≥ 0.5μm particle size of dust ≥ 99.9% (sodium flame method) Asian efficient ≥ 0.5μm particle size of dust ≥ 95% (sodium flame method) 2, the initial resistance: efficient ≤ 235.44Pa Asia Efficient ≤ 69Pa Applications: apply to the end of all kinds of clean indoor air outlet.