... Heater high quality 1.CE ,ISO9001.CCC 2.5 years guarantee,15 years lifetime. 3. OEM service Compact SS Solar Water Heater high qualityDENO Compact ... , water tank, stand. 2. Using solar vacuum tube is very high efficiency.3. The complete system doesn't need any power ... rainy3. Magnesium bar: protect inner tank to be corroded.4. Quality Certificate: ISO: 9001:2000, CE.5. OEM: Welcome.6. Warranty ...