1. The material of EPDM is imported from Europe, which is anti-aging, anti- corrosion and has durable service life
2. Stair-stepping seal structure can prevent the membrane loosing off
3. periphery of diaphragm is thickened to compensate the extension, the thickened part can protect the rubber membrane from tearing up by concentrated stress
4. double reflux valve design can prevent sewage seeping into the pipeline system
5. special once molding process forms fine bubble on the membrane, makes the air bubbles diffusing evenly, less resistance loss
6. diffusing air bubbles are fine and even, enhances the oxygen utilization and oxygenation capacity
7. good self-cleaning and anti- clogging property