solar keymark, srcc, en-12075 tested solar collectors
no water inside vaccum tubes
efficiency, cheap, environment protection..

solar collector

Specification:

1)Outer shell material: Aluminium alloy

2)Inner material: Red copper channel

3)Adjustable installation angles: 30°, 45°,60°

4) Heat-Collecting tube specifications: 58mm×1800mm

5) Anti-Hail: 25mm

6) Bracket: Aluminum alloy

7) Anti-Frozen: ≥-35%