I don't understand what you don't understand about how this service works? I've written a few times but here's another one if you haven't put me on ignore or it won't be hard for you to read.

OP is find people (or he is get access to people documents), and then account is open in some bank. That person is then deliver plastic card with all data to OP, and he is then sell that card to you. You pay for this service a little less than 1000 EUR per year, and that money is divided between the OP and the actual cardholder. The process is quite simple, there isn’t some great wisdom in how the whole thing works.