type-c docking, there is a called pd fast charge, it is what kind of interface?

I use SSK Biao 10-in-1 type-c docking station, this PD fast charge interface is type-c shape, but inside is PD fast charge protocol, such as Apple charger plug in can charge notebook\/mobile phone, of course, PD fast charge also points to zero, such as Biao King this docking station is PD3.0 support up to 87w (W) fast charge.