Description：

1. Inner tank 0.4mm SUS304 stainless steel made in Korea.

2. Middle polyurethane made by Germany Bayer.

3. Outer tank is 0.4mm color steel or stainless steel.

4. Frame is 1.2 mm zinc-coated Aluminum alloy or stainless steel.

Technical specifications：

1. Whole glass vacuum tubes adopt super hard borax and silica glass.

2. Absorb rate: ≥93%, thermal radiation rate: ≤6% (100 ).

3. Temperature when exposed to sun without water: 250, 2.5hours to boiling if ℃using single tube.

4. Resist 25mm hail, using life can last 20 years.

Feature：

1. Inner and outside water tank shell all are welded by argon arc. Water is pure and drinkable.

2.Heat insulation of water tanks adopts polyurethane foam, thickness is 55mm.

3. Between vacuum tubes and inner water tank, we adopt silicon rings to connect and seal them.

4. The tubes and supports are adjustable, power bearing is average, and can assure the vacuum tubes to use long time.

5. If you use electrical appliances to aid heating, to switch off the power supple before bathing.

6. To test the water temperature before using, in order to avoid scalding.