We use submergible heating element and heat source is in the center of aluminum solution. So we have great heat-transfer performance which can save more energy consumption than traditional heating methods. Aluminum Sollution at the top of the kiln will not be oxidated because of overheating. The loss of aluminum will be lower. The quality of aluminum casting parts will be better. At the same time, the damage due to residue of aluminum dregs in the kiln wall will be reduced.