Are Trade Stations a resource sink?

[Bokuku]

Do they consume wares and are sinks? I would guess so because what do u do with spaceweed.. I guess it's a sink?

[Karlfeldt]

Seems not. The war and destroy ships seems like a resource sink.
The stations consume food and powercell but these can be easily supply. (not sure)

[Nikola515]

I had same question as well... To me they seem like warehouse from XR or Terracorp HQ from X3 where we can sell stuff that we can't sell (for whatever reason). I'll probably test it eventually when I get big enough empire. I hope someone can check game code so I don't have to do it hard way