Outer: color steel and stand parts made of galvanized steel with powder coating
Heat insulation of water tanks: polyurethane foam
Thickness: 55mm
Welded by argon arc
Pure and drinkable water
Silicone rings to connect and seal
Adjustable tubes and supports
Power bearing average
Assure vacuum tubes to use for long time
Whole glass vacuum tubes adapts super hard borax and silica glass
Absorption rate: 93%
Thermal radiation rate: 6% (100°C)
Temperature when exposed to sun without water: 250°C
2.5 hours to boil if uses single tube
Electrical appliances to aid heating to switch off power supply before boiling
Test water temperature before using in order to avoid scalding
Hail resist: 25mm
Lifespan: 15 years
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