"You may choose the same section on your Player Mat as the previous turn(s)"
Does this apply to the factory card? Can you keep choosing the factory card time after time?
We played it that you can.
Yes, see "Faction Abilities" on pg. 21 of the rules: "the Rusviet faction may choose the same section of their Player Mat as the previous turn(s). This ability also applies to a Factory card if you have one (see Factory section)."