The HDW4X1100-170D/S system features four 1.1 kW oil-free air compressors operating in parallel, offering a high discharge capacity of 600 L/min and a 170 L air storage tank; it delivers stable, clean oil-free compressed air at a low noise level of ≤70 dB, ideal for medium-sized dental clinics, food packaging lines, electronics workshops, and spray coating operations.