All Resources only use 1 volume
All Resources only use one space in there respectable storage locations in Ship Hulls or in Stations Storages.
This included the following game and dlc Resources as well:
X4: Base Game
X4: Split Vendetta
X4: Cradle of Humanity
X4: Tides of Avarice
X4: Kingdom End
X4: Timelines
Makes Mining and trading with all other Resources a bit easier, it help to make trading with, or to profit with or to supply your own Stations with resources faster per round trip.
THIS EFFECTS EVERY FACTION IN GAME AS WELL AS YOUR SELF.