[WH3] How do you complete Technology Objectives as the Legions of Chaos?

Far as I'm aware, you don't have a tech tree as you just have the Demonic Gifts instead. However, the game still asks for things objective wise like "Build a technology building" and offers a demonic glory reward... But there's seemingly no buildings that do such in the list?

Apologies if this is a dumb question, been having a real hard time trying to google anything tech related with Total War III without it giving completely non-relevant results >x>'