Adjustable frame and easy to install .solar energy.
Features:
1) Outer tank: SUS304 stainless steel, thickness of 0.4mm
2) Inner tank: SUS304 stainless steel, thickness of 0.5mm
3) Frame: 1.5mm stainless steel
4) Insulation: 55mm thickness foamed polyurethane
5) Vacuum tube: 1,800mm / dia. 58; 1,500mm / dia. 47
6) Tank model: dia. 470, dia. 420
7) Capacity: 100L - 250L.
8) solar energy
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