... Solar Power Water Pump 1. GS, ROHS.CE.ISO9001:2000 2.Easy installation 3.Maintenance-free 4.Non-Pollution Noiseless NEWSKY ... Solar Water PumpFeature:1. Compact structure, high-lift, noiseless, non-pollution , complete electrical protecting controller device, against under-voltage, ... Max efficiency is over 85%,raise 25% than traditional AC pump.4. Material: 1)stainless steel casing, shaft core, ...