I got this one from AliExpress to use as a travel charger and noticed that it has an unusual spec in that it can deliver 5V3A, 9V3A, 10V2.25A, 11V3A, 12V2.5A, 15V2A or 20V1.65A from its USB-C port. I thought USB PD fixed voltages are 5/9/15/20 so what standard are 10/11/12 representing if any?
Modern USB PD power supply dont have only fixed voltages but voltage can be adjusted in small steps.
The USB power tester says this one is not publishing any PPS PDOs. Same with a PD trigger.
That is strange as on chongdiantou it is showing PPS. Maybe it is fake.