It's different. The Huawei mate20 charger is the same as the mate30. These two mobile phones are high-end models released by Huawei, to say the charger, they must be different, after all, it is released at different times and different models. Although his charger power and charge are not the same, but can be compatible after all, it is the same brand.
The charger is the same, all 40 watts, super fast charge, but the size may be a little different