Features: 
1) Succinct and steady aluminum alloy bracket, strong corrosion resistivity
2) Follows mechanics structural design principle, and strong resistivity of 
    wind
3) Unique "flower petal" end cover design, integrative with the barrel body, 
    can be used years around under high temperature, no gap appears
4) It provides the electrical heating connection, both solar energy and
    electricity supplement, it will normally work when the air temperature falls
5) Adopts importable polyurethane, uses automatic constant temperature 
    high pressure bulk bubble technology, one-off molding, with excellent
    thermal properties
6) The inner gallbladder is welded by seamless automatic argon arc welding 
    technology, with long-lime usage life

Specifications: 
1) Outer shell of tank: silver glitter sheet/ pearlite sheet
2) Inner tank: esculent standard SUS 304-2B 
3) Thickness of the heat preservation layer: 60mm
4) Heat preservation: 72h
5) Size of the vacuum tube: φ58mm x 1,800mm
6) Number of tubes: 15/16/18/20/24/30
7) Volume of tank: 150L - 300L
8) Bracket material: aluminum alloy
9) Angle of stand: 38 - 45 degrees
10) Pressure: 0MPa
11) Hail resistance: 25mm