Compact SS Solar Water Heater high quality 1.CE ,ISO9001.CCC 2.5 ... years guarantee,15 years lifetime. 3. OEM service Compact SS Solar Water ... .S.1. Controller can display the temperature, water level, automatically water loading etc.2. Electrical heater, which is ... Magnesium bar: protect inner tank to be corroded.4. Quality Certificate: ISO: 9001:2000, CE.5. OEM: Welcome ...