1)Famous Brand(OEM Allowed) 2)Certificates:CE,UL,RoHS,CCC 3)German technology 4)Ex stock Parameters:Size:Composion:Features:1. Beautiful surface 2. Easy installation 3. Low noise level 4. No vibration, and therefore complete dynamic stability 5. Pulsation-free discharge 6. Minimal maintenance 7. Higher pressure ratio 8. Cooler running bearings 9. Longer grease life 10. Simple maintenance 11. 100% ...