What is the meaning of "Grand Vin de Bordeaux" on the wine trademark?

It's French, which means bordeaux quality producing area.

Generally, AOC wines will have this line, which proves that this wine is a quality wine in Bordeaux. However, it does not mean that it is top-notch. GRAND VIN DE BORDEAUX, literally translated from French, is a wine marked "GRAND VIN". Its quality and taste are better, and its quality is more guaranteed.

Names have nothing to do with AOC classification, and the reality may be different from the theory. As long as it is slightly better than the average Bordeaux AOC, it is often marked with the words Grand Vin.