Fort bicycles company from Czech Republic: Where are the steel frames? Company renamed?
I would like to answer my own question, as I have investigated and found some interesting facts. The vendor name for the Fort steel frames since the year 2008 is Intec. Search for Intec, and you will find all the old frames. In this forum thread user verreweg explains the differences since the renaming (the manufacturer’s name is still Fort): The new frames are cavity sealed, have a chemical pre-treatment with phosphates (phosphated) and new stickers with the Intec label.