High Pressure. Larger Flow. Light Weight. Aluminum Alloy Material Was Widespread Be Use, Offer Light Products. I.E.C. Designed Motor (1hp Up), Squirrel Cage Induction Motors & Specially Designated Shaft Can Satisfy Long-time-continue Operation. Professional Impeller Designed, High Pressure, Larger Flow, Low Noise, And Long Life. Special Air-flow-adjust Designs Offer Stable Flows And Easily Control. Wooden Case