Characteristic: 1.The upright tank can make the water temperature to   a high level.
It can hot the   water instantly.                                
2.The tank inside the building, the hot....

Feature: The copper pipe inside the vacuum tube could quickly transfer the heat into the water tank through heat conduction medium.The system can endure tha max pressure up to 0....

Features: The assistant tank is used to supply the cold water automatically.When the water tank reduces to a certain level, the assitant tank will supply the cold water....