solar water heater 1)CE,3C,ISO9001,CNAL; 2)non-pollution; 3)beautiful and easy to install ... system and 15 years for vacuum tube.Non-pressurized solar energy1.solar water heater with CE,3C,ISO9001,CNAL ... assistant tankLogo: OEM, co lour printing /stickerFeature: 1.Solar water heater with CE,CCC,ISO ,CNAL certificate2.Special ... .68m²300L7-11 2012 best selling non-pressurized rooftop solar water heater