Import Substitution Is a Harsh Mistress

The best space colony export being considered now is a sunshade installed at Earth-Sun L1 made from asteroid materials, probably some combination of plastic and metal films made from a carbonaceous chondrite. They would be something like this

https://en.wikipedia.org/wiki/IKAROS

Sunshade modules would function as solar sails so they could navigate on their own power from the point of manufacture to the point of delivery and not waste volatile fuels.