Huawei is set to release its latest power bank for sale for the first time in China. This will take place in the coming week (on April 11, 2019). The OEM alleges that this power bank is compatible with devices that can charge at 40 watts. This includes the P30 line of smartphones, as well as some Matebooks.
https://www.notebookcheck.net/Huawei-s-new-40-watt-12000mAh-power-bank-set-for-April-11-release.415933.0.html