So essentially I failed to think ahead far enough. I have a party I wanted to send on a bit of a milk run to give them the hang of the game. This was a terrible idea as the whole thing has dragged on too long.

I had them meet with a Hutt looking for work, the Hutt sends them on a supply run with a ship and captain he doesn't trust, and the whole thing is a smuggling run to supply an Imperial station kept secret from the rest of the Empire. The Hutt himself is being blackmailed into managing this smuggling operation and hates it. Along the way I came up with an interesting mechanic for encounters during a trip through an asteroid field. But essentially they've arrived to deliver the cargo. Problem is I didn't worry too much about the station because I intended them to simply learn it was there, sell the info to the Alliance and return, job complete.

One PC is a budding infochant, and the other a trader. My idea was that the trader could bargain to take on an extra supply run, essentially take something away from the station, while the infochant has learned the location of a secret Imperial station. I didn't plan for what the cargo was, and I've implied there might be a lot of it, they were on a Space Master but there's space to backpedal on the amount of cargo. Further, the infochant rolled well on a knowledge check, and I dropped the term Blackwing, which the player may or may not know.

My thoughts are that this is a facility where they are working on The Sickness a la Death Troopers, but containment has held so far. I don't want to have an outbreak just yet, these are new PCs and it's something I might do later on, but this is EotE not AoR so they shouldn't feel too obliged if they do learn what it is. At the least they should seek help first and that's assuming they discover its purpose.

So my issue right now, is what their cargo would be, and what kind of cargo might be available for them to take away. Feel free to weigh in.

Parcels of personal goods for station personnel. It might be letters from home, the new holovid, the whole month's pull of comics (or pornography), a fruitcake, prescription refills, or just about anything that make the people there feel human. They likewise send out stuff too.

You could be setting up an outbreak for later, the Hutt may be getting an example of the research (ah-la Jurassic Park) or just a Data Packet in exchange for some of the items Happy suggested or just hard cash (Hutt pegates, rare metals, jewels, etc.).

An outbreak could lead to a moral choice for the PCs feeling responsible for helping o n the run...

I had an idea for an adventure where there are reports of a disease on a planet, so the PC's turn up to help only to find that the Imperials are already there and are freely administering a cure (this is post-Return of the Jedi, so there are factions of the Empire still around trying to make their own little corner of the Galaxy).

The PC's are suspicious of this, and a little investigating shows that the Empire secretly manufactured the disease and the cure as part of a scheme to show that the local Moff is nothing like the Emperor, so the planet should come under his protective wing, rather than sign up to the New Republic.

In your case, the facility could be manufacturing the disease and the cure, so you are laying the ground for the above story idea at some point in the future (maybe the PC's recognise the shipping containers or one of the scientists)?

Why not just a Ton of BACTA? It's used for "Science-y research stuff". Generic and widely used, but large quantities may raise suspicions, hence delivery by a third party.