1, the definition of wine is that wine is an alcoholic beverage made from fresh grape fruit or grape juice after partial fermentation or full fermentation, and the alcohol content is between 7%- 16.2%. The raw material of wine is generally wine grapes, and it is rare to make wine with fresh grapes. According to the regulations of the International Grape and Wine Organization, wine can only be an alcoholic beverage obtained by completely or partially fermenting fresh grape fruit or grape juice, and its alcohol content should not be lower than 8.5 degrees.

2. However, according to the climate, soil conditions, grape varieties and special quality factors or traditions of some wine producing areas, the minimum total alcohol content of wine can be reduced to 7.0 degrees in some specific areas. China's national standard (GB 15037-2006) is that wine is made from fresh grapes or grape juice through full or partial fermentation, and contains alcoholic beverages with certain alcohol content. Its alcohol content shall not be less than 7.0 degrees.

3. The year marked on the vintage wine refers to the year when the grapes were picked, in which the proportion of grape juice in the vintage is not less than 80% of the wine content. Variety wine means that the proportion of wine brewed with the marked grape varieties is not less than 75% of the wine content. Origin wine means that the proportion of wine brewed from the marked origin grapes is not less than 80%.