Features:
1) ISO9001 / CCC / CE certificate
2) China well-known trademark
3) Super and strong heat absorption & preservation
4) Intelligent control and automatic operation
5) Convenient installation: Available on both horizontal and slanting house roofs
6) Without incrusting, long usage life
7) 3 years international responsibility for free repairing or exchange due to original quality problems
8) Optional accessories: Assistant tank, electrical heater, controller

Specifications:
1) Vacuum tube: Borosilicate glass 3.3, AL-N/AL or Al N/Al N-SS/Cu selective absorbing coating
2) Vacuum tube size: Φ47x1, 500mm / Φ58x1, 800mm
3) Vacuum tube qty: 12 / 15 / 18 / 21 / 24 / 30 / 36 PCS
4) Interval: 6.7cm (Φ47x1, 500mm) / 7.7cm (Φ58x1, 800mm)
5) Heat insulating layer: 50mm / 55mm / 60mm thickness polyurethane foam
6) Heat preservation: 72hrs
7) Inner tank: Made of SUS304-2B food grade stainless steel
8) Thickness of inner tank: 0.3-0.4mm
9) Outer tank: Stainless steel
10) Tank diameter: 420mm / 470mm / 500mm
11) Bracket: Stainless steel
12) Thickness of bracket: 1.2-1.4mm
13) The best angle: A reasonable bracket angle basing on different latitude in order to gain more heat
14) Hail resistance: 25mm
15) Tank capacity: 80L-300L