Have you scanned the disc with Kprobe? Or nero's disc quality check?
Even a speed test should show if the disc is any good.
TYG02 ... is the suggested write strategy.
Most (decent) branded discs have a company unique code.
Cheap dodgy companies will have a fake media code they "borrow" from a decent companie's media.
Usually though, it's an older code.
But media made in HONGKONG/CHINA = crap, no matter what it claims.