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non pressure vacuum tubes solar collector--Zhejiang Wakin Solar Energy Technology Co., Ltd.
Material and Major Element: | |||||||||
1. Vacuum tube : 58*1800mm | |||||||||
2. Material of Vacuum Tube: Borosilicate glass 3.3 ,coating: Al/N/Al | |||||||||
3. Manifold: Galvanized Plate | |||||||||
4. Bracket :zincification painting bracket | |||||||||
5. Preservation : 45kg/m³ high-density polyurethane foamed /rockwool | |||||||||
6. Warranty | |||||||||
a)ISO9001 / CE certificate | |||||||||
b)5years' international responsibility for free repairing or exchange due to original quality problem |
non pressure vacuum tubes solar collector-Zhejiang Wakin Solar Energy Technology Co., Ltd.