with cetificate like CCC/CE/ISO/Solarkeymark/SRCC/ROHS/EN12976(75)

Features:1)non-pressure tank
                 2)direct inset vacuum tube

1:inner water tank shell is made of SUS304 2Bfoodgrade stainless steel plates,weded by argon arc.water is purean drinkable
  outside water tank shell is made of painted steel with nicecolour and pictures
2:heat insulation of water tanks adopts polyrethane foam and thethicknessis 55mm

3:silicon rings to connect and seal them

4:the tubes and supports are adjustable

5:whole glass vacuum tubes adopt super hard borax and silicaglass,long life span

6:absorption rate:=93%,thermal radiation rate:=6%

7:it resists 25mm hail and the using life can last for 15years

9 electrical appliances to aid heating and to switch off thepoewe supple before bathing.
10:please test the water temperature before using ,in order toavoid scading

11:the length of the vacuum tube can be 47*1500 or 58*1800