[Insert: Some site history
While the German subsidary (Commodore Büromaschinen GmbH), originally set in Neu-Isenburg near Frankfurt, had facilities for import handling and distribution, this was soon moved to a distribution center in Braunschweig and accomplished by a final assembly line and a development center. At the same time the company moved into Frankfurt city. This was the setup from 1982 until the end.
Commodore Germany did in the beginning quite a lot adaptations and variations for the PET line. This includes rebadged devices like the 8026 daisy wheel printer bought from Olympia all the way to 'genuine' Commodore products like the 8028 based on the East German Robotron SD1152/253 printer mechanic (well, and several other parts, like switches, were bought from across the iron curtain). PET development ended with certain models of the PET-II line. After their demise the German surplus market was flooded with Commodore PET/PET-II computers as well as empty shells.
The first complete system developed in Germany would be the PC compatible PC-10 of 1984 (Introduction in the US 1986), followed by the Z8000 based CBM-900 of 1985. The 900 was scraped soon after introduction - it is said because of the upcoming Amiga - but the PC series was quite a success in Germany and other countries, running until the very end. Notable here the PC-1 (or Colt in the US). Hardware wise a shrunk PC-10/III developed in Braunschweig on request of Commodore USA to counter the Atari PC1.
The Amiga 1060 sidecar (1986) was as well designed and built in Braunschweig. It does make sense with their experience in PC machines. Similar (AFAIK) the various bridge cards for the Amiga 2000 were made and built in Germany. Now due even more heritage as the 2000 itself was designed in Germany as well.
If you ever wondered why the Amiga 2000 design looks so different from the A1000 as well as any other (US) Commodore, just compare it with the 900 and PC-10. The 2000 was intended to be sold in Europe and should fit the design of all other professional machines. In addition considerable part of the newer chipset designs (A3000) were as well done in Germany.
There has been much more development after Commodore International went belly up, but that's a different story. BTW, it might be notable here that in fact Commodore Germany as well as Commodore UK were profitable until the end - and at that time generating about 2/3rd of all business.