1. This product adopts unique triple-core technology, assuring hot water all the year round 2. Temperature preservation is equipped with standard electric water heater. The electric heater is in the left tank. When it is needed, only the water in this tank is heated, so it will be heated very quickly and the electricity is saved. 3. Adding water tank can add water automatically 4. Scientifically designed bracket can hold the tank firmly 5. High quality vacuum tubes 6. Simple structure, easy plug-in installation. 7. Cheap and efficient 8. Can be operated completely automatic if connect with intelligent controller 9. Be used in area widely
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