Collector separates with storage tank.  
The tank can be put in any place of house.
And the collector can be put on the inclined roof or flat place. 
Mould design, arbitrary combination, harmony with the building perfectly.
Intelligent control and automatic operation.
Anti-freeze: No water inside the tubes when it works.
The system controller has the anti-freezing function is that the temperature
circulation will operate while it reaches the fixed temperature. 
Multifunction: bathing,washing, domestic heating. 
Works at anytime 
It is enjoyable.