... 86 per hole 3.15Years Warranty for tube 4OEM Compact Pressured solar water heater 1.CE,ISO9001,CCC2.pressurized and USD16.00-19 ... use of special effects, water temperature and faster heating. Advanced exh-aust work Arts, the heat collector tube to a smaller ... Dual-level ramp.Technological advance: the use of more safe, non-troubled waters, anti-burst, antifreeze, E-nrichment process.Collector device ...