1)Inner water tank shell is made of SUS3042B food class stainless steel,welded by argon arc

2)Outer water tank shell is made of luster steel plate(white), corrosive-resistance

3)Insulation layer of water tank adopts polyurethane foam and the thickness is 55mm

4)silicon rings to connect and seal

5)Vacuum tubes and support can be adjustable; the power bearing is average to assure the tubes to be used for a long time

6)Vacuum tubes adopt super hard borax and silica glass

7)Absorption rate=93%, thermal radiation rate=6%

8)It can resist 25mm hail and the servicing life can last for 15years

9)If you use auxiliary electric appliances(optional, according to your requirements) to aid heating, please switch off the power supply before bathing

10)Please test the water temperature before using in order to avoid scalding

11)With microcomputer control technology, it can be filled automatically and heated to ensure hot water supply during 24 hours