No. The Huawei P20 Pro is charged with a maximum of 5A at 5V, i.e. with 25 watts.
Here, it is "only" charged with 10 watts.

is the charger suitable for iphone?

Unfortunately it was defective, i.e. I couldn't use it.
Then I bought an Anker with double the mAh. It's a bit more expensive and a bit heavier. But it's a top bank that charges extremely quickly and lasts for 3-4 charges for a mobile phone or 1-2 for a tablet.

Cellularline Freepower Slim Horror-Fazit Digitec-Test: Wird mit FastCharge beworben, obwohl sie maximal 10 Watt aufnimmt, was jede Powerbank kann. Wird auf der Verpackung mit übertriebenen Leistungsdaten beworben: «Smartphone 8x laden» – welches Smartphone hat eine Batterie mit mickrigen 1250 mAh? Selbst ein Nokia 8110 speichert mehr Energie.
Siehe empfehlenswerter Digitec-Test hier:
https://www.digitec.ch/de...
Power-Bar-Empehlung am Ende Test:
I've chosen the Xtorm XB303 as the one to keep. It's the combination of high capacity and fast charge/discharge that wins it for me. In the >20000mAh category, the only other competition is the Anker 27000mAh power bank (plus variant) but the extreme slow charging rules it out. Plus, around 15W/18W where my phones will usually charge, the Xtorm has a higher capacity.