... water heater specifications:1.vacuum tube:Vacuum Tube With Copper Heat Pipe.2.Inner Tank:SUS304-2B Food Class Stainless Steel ... Magnesium Bar,Temperature Sensor,Controller,Electrical Elements,etc.9.Copper Heat Pipe:Heat Pipe Tubes,Thickness:0.6mm,And 140mm Condenser.Anti- ... solar water heater Features:1.Ppeline Is Made Of All Red Copper And Conducted By Heat Transfer Medium Liquid.2.Temperature ...