Datamax eh. Using the TYG02 code would mean they are trying to fake Taiyo Yuden's media code, which means their discs are going to be inferior to the real thing.
It would have been better if it said CMC, at least that would be believable.
I don't know what to tell you, there's a high chance the discs will be rubbish. Hopefully they are very cheap so it wont matter so much.