Visa, Residence Title and the Immigration Office – Things you need to know!
https://www.th-koeln.de/en/visa-residence-title-and-the-immigration-office--things-you-need-to-know_112181.php
You have a non-EU nationality and study at TH Köln with a visa or a residence permit for study purposes? Then you certainly have many questions about this topic and the responsibilities of the Immigration Office. To give you an overview, we have compiled a lot of helpful information and useful tips so that you are well prepared when the time comes to extend your residence permit. More