The wine is a natural wine, bottled in consumer packaging (bottles, Tetra Paks).
Ie and base wine from which champagne will do Moët Chandon, and bulk from Africa, from which Russia will do Abrau Durso, and the latest rough spin from Spain that will be “Russian” wine for 200. – all the wine. Only very different.
Thus, the wine is just a technical term unrelated to the level and quality of the wine. And harm him no more than from the wine itself, to shy away from it just not worth it. A “dry wine material” is a dry wine prior to bottling.
Cheap wine of low and medium qualities sold in bulk to other producers, called “Balk”.
