Material: inner and outside water tank shells are made of SUS304 2B food grade stainless steel plates
Welded by argon arc
Pure and drinkable water
Heat insulation of water tanks adopts polyurethane foam and 55mm thickness
Silicone rings to connect and seal
Adjustable tubes and supports
Power bearing average
Can assure vacuum tubes to use for long time
Whole glass vacuum tubes adopts 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
Uses electrical appliances to aid heating to switch-off power supply before boiling
Test water temperature before using in order to avoid scalding
Resists 25mm hail
Lifespan: 15 years
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