I’m not sure whether this info is only valid for Germany
or for other European countries, too…
At the moment a lot of the Fuji 100pcs cake boxes contain TY CD-Rs 
These CD-Rs are certified for up to 48x speed and the cake box design
is the new typical TY design. You can even find a “Made in Japan” on it 
So I think it’s worth to take a closer look when a shop sells Fuji 100pcs cake boxes,
they might be Taiyo Yuden 
Andy 