1 Safety, it uses 220V electric heating oil heater to ensure absolute, insulation and no leakage, because the heat conducting oil is 100% non, conducting and the heat conducting speed is fast. (built-in dry burning, water level controller). 2 Energy saving, only 1 square thick power line (220V) is needed for power, supply, and the power consumption is less than 10 Kwh in 24 hours under, the environment of - 35 (the built-in adjustable water temperature, control ensures the best drinking water temperature and reduces energy, consumption). 3 Environmental protection, using food grade LLDPE plastic roll molding,, hollow layer more than 50mm, using WANHUA pm200 high-density, polyurethane foam, excellent insulation effect. 4 It is easy to install and use. The electric heating oil heating device is, directly connected with a 220V power line, with an automatic flushing, device. As long as the flushing valve is opened, the flushing device in the, middle of the drinking water tank will heavily flush to both sides, and the, flushing effect is best and quite convenient.