What era? That will make a big difference in what the rolling stock and the building(s) look like. Is this going to be a long established company in an older building, an old company in a new building or some start up in swanky new digs?
How about LePew Perfumes? Tank cars, hoppers come in and tank cars, hoppers and containers/box cars go out.
O.D. Trocous & Sons chemicals? Tanks, hoppers, box cars, containers in - similar out.
Watt & Zamatta engineering? Hoppers, containers, box cars, flat cars, gondolas in - containers, box cars, flat cars, gondolas out.
I always thought something like the "Michael Mansell Cultural Centre and Artifact Co-Operative" would one day wind up on my layout as a homage to a fellow part-aboriginal who doesn't look aboriginal. (I wonder how many are now googling Mike and getting all peeved at me. At least Gadaffi never paid for my "cultural exchanges".) Such a facility would of course house a factory capable of turning out aboriginal "artifacts" at a prodigious rate for the Chinese/Japanese tourist trade. Bulk supplies of clay, wood, paint, glazes, dies, fabrics, adhesives and any number of other raw materials would come in and boxes/crates of finished "authentic" artifacts would ship out by the box car and/or container load.
"God wants spiritual fruit, not religious nuts!" (appeared on the sign outside our Pentecostal church)