It is mainly due to the following reasons. :
First, the new model, buy new do not buy old, Song plus dmi is a model launched after the Song pro dmi, is a replacement model of Song pro dmi.
Second, the size is larger than the Song pro dmi, the interior appearance is redesigned, the material is more sufficient, and the cost is higher.
Third, longer battery life, larger battery capacity, shorter charging time, and higher battery costs.
Fourth, better configuration, better technology content, better own driving level.
To sum up, the Song plus dmi price will be higher than the Song pro dmi price of course.