... thicknessOut Tank: SUS304-BA 0.4mm thicknessBracket: SUS202 stainless steel 1.5mmVacuum Tube:AL/N/AL or Cu SS-ALN ... -QZ-1.8M/24#58MM1800MM24240FR-QZ-1.8M/30#58MM1800MM30300 Solar Water Heater1.Obtain CE,GS, VDE, ISO9001,CCC certificates. 2. ... , harmonize with the building perfectly5. Multifunction: bathing, washing, domestic heating etc6. Work at anytime and enjoyable7. Easy plug-in installation