... SOLAR WATER HEATERPRICE, SOLAR WATER HEATING, EVACUATED TUBES, VACUUM TUBES, HEAT PIPE SOLARWATER HEATER, HEAT PIPE SOLAR COLLECTOR ... PANELS, SOLAR COLLECTOR, SOLARCOLLECTORS, SOLAR COLLECTOR PANELS, EVACUATED TUBES SOLAR COLLECTORS, EVACUATEDTUBE SOLAR COLLECTOR, HOME SOLAR COLLECTOR, ... aluminum alloy with 1.5mm ///1.8mm thicknessHeat insulation layer: rock wool with 50mmthicknessFlowing passage : 1. ...