1)It is suitable for the flat roof and the slope roof.
2)The support material: Aluminum alloy or stainless steel
3)Manifold Casing Material: Stainless steel or Aluminum
4)Insulation: Rockwool
5)Hail resistance: 25mm
6)Heat-pipe vacuum tube: Three target tube with the SS-C/CU selective coating
7)It can endure 0.6Mpa high pressure.
8)When one vacuum tube is broken, it still can work as normally
9)High efficiency: >64.9% in summer and >45% in summer
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