Characteristic: Best Quality Silicon Steel Plate. Energy Saving. High Oxygenation Performance From Unique Design. Sturdy Stainless Steel Frame Ensure Without Any Deformation. Easy Maintenance. The Unique Aerator Motor Made Under "ISO9001"And "ISO14001" System. "100% New Raw Materials"are guaranteed to be used in our products. Note: Since May 2017 Our New 1 HP / 2 HP three-phase high efficiency electricity saving motors Will Be Launched. Feel free to contact us if you are interested in our new product.