If you are referring to the blue topped CD-R80 52X I was not aware any TDKs were made in Luxemburg.
As far as I am aware and this was ratified by TDK themselves after mailing them, they are made by three companies to TDKs quality standards.
MoserBaer and CMC
Although on checking some recent ones they came up unknown..
I have used loads and loads of these with problems/coasters at all...