"(to sum up this site http://www.XXXXXXXXX.com/ is selling mash copy frames with the price listed is 120 euro read on the site for more info theres an english translation)"
Something like this can sometimes apparently happen if during the framebuilding process a heavily butted steel tube is heated too much while brazing. I wasn't too happy about this happening to my daily ride but the frame is still within the warranty period in any case.
Remember, do not put hub into a vice, not even if you forgot to take the lockring or cog off before you unlaced the wheel, ok? Fedja did and this happened.