1. High pressure storage tank(Testing pressure=9 bar)
2. No vent and less heat loss as compared to low pressure model
3. Highly efficient heat pipe technology
4. No water introduced into vacuum tube
5. No sealing rubber is needed
6. Easy plug-in installation
7. 55mm CFC free PU foam insulation
8. Dry connection between heat pipe and water and no need to empty water tank when replaceing tube.
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