>>539335114
Importing hazardous waste is a great starter industry but it doesn't scale because the price drops off if you import too much. As far as salvaging goes, I wouldn't build a salvage yard just to make money, but since I already built it to dispose of broken vehicles, I check the customs now and again for especially old, cheap stuff. Those 20-30 year old trains and trucks definitely net a small profit, but there's usually not a lot of them, so I don't think a republic based on salvage alone would work.

I wish there was a way to see scrapping yields for any vehicle, before you buy it.