Back in 2006 I was in Italia to experience the Giro di Lombardia. On my way from my hotel in Milano to the top of the Madonna del Ghisalo I stopped by the De Rosa factory pictured in the article.
This was early on a Saturday morning and I just wanted to see what the place looked like. They have a little "outlet store" in the front of the building and as I was peering in at the assorted stock when a pleasant Italian gentelman came to the front door. In broken Italian I said good morning and that I was just checking out the place. In perfect English they guy introduced himself as Christiano De Rosa and invited me in.
I wandered around the showroom for a bit and engaged Christiano in a bit of chit chat and we started talking about the Macro model. I told him that I got to Italia a couple times a year and asked if they could do a "custom" color scheme on a Macro frame if I was there to pick it up. He assured me that they could and that they painted frames on site.
I asked a few more questions about production and to my surprise Christiano said "come, follow me, I'll show you." So, back into the factory we went. I got the nickle tour by one of the owners of the company! It appeared to me that they made the frames there, in Milano. Since I was interested in a Macro Christiano showed me the raw tubsets, CF rear stay assemblies (already assembled so they may have been made somewhere else, i.e. China), and the assembly station where the tubesets were mitered, jigged, and welded. Then he walked me back to the paint booth to show me where my frame would be painted.
I asked if Ugo would be willing to sign my top tube prior to clear coat and Christiano said "Ma Certo" - of course.
To make a long story short, I never followed up on the frame but it was quite a memorable visit. At that time I can vouch for the fact that at least some of their frames were made in Milano (I also saw raw Dual HF frames by the hundreds).
If you're ever in Milan I recommend stopping by the factory. Maybe you can get the tour from Ugo.