Features:
Vacuum tube adapts one target heat collection techniques: Higher heat-getting efficiency, reducing water-stagnation

Parabolic surface internal bladder: Higher pressure-supportive capability

Best angle: Reasonable bracket angle basing on various latitude in order to gain more heat

Convenient installation: Available on both horizontal and slanting house roofs

Super and strong heat preservation: Using world's advanced hydraulic pressure
technology to make it with higher heat preservation

Diffuse flat plate reflector: To increase heat-getting efficiency

Specifications:

Bracket thickness: 1.5mm
All-glass vacuum heat collection tube: 58mm x 1.6m x 15/18 pieces
Inner tank: Sus304-2b food grade stainless steel
Outer tank: Spraying paint steel
Tank capacity: 129 or 154ll
Insulating layer:
Thickness: 45mm
Inner tank thickness: 0.4 to 0.5mm
Tank diameter: 460mm
Heat preservation: 72 hours
Hail resistance: 25mm
Aperture area: 1.629 and 1.960m2