They’re just lacquers. The only difference that I can sus out is that the lacquer is applied to an aluminum disc vs lacquer all the way through. In other words, it’s more of a hybrid than something new.
Actually regular lacquers are in fact an aluminum disc that is coated with lacquer; there are no lacquers made that don’t have the aluminum disk inside. The Appollodisk plant burned down a few years ago and is looking like it won’t get rebuilt so now the only source of product like this comes from a guy in his late 80s working out of a garage in Japan.