1. Collectors are separated from the storage tank. The tank can be put anywhere of the house,so the whole system is harmonious with the building 2. Absorbing heat quickly 3. No worry about being frozen because there is no water running inside the tubes when working 4. Completely automatic operation 5. It can withstand pressure of tap water when it works 6. without incrusting, long usage life 7. Multifunction: Bathing, washing, domestic heating 8. One or several glass tubes broken will not influence system work 9. Tubes can be laid for long time under the sun without water in the tank. 10. Suitable to use in all kinds of climates with electric heater 11. The tank inside the building, the hot water loses less energy than the normal one 12. The upright tank can reduce the cold and hot water to mix together
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