A 2023 Jilin agriculture reply describes Ji’an’s grape sector, distinguishing wild mountain grapes from selected and hybrid cultivars including Beibinghong and Vidal.
From the journal
Tonghua Mountain-Grape Wine: From Harvest to Oak
A Jilin agriculture reply describes Tonghua-area grape varieties, while a Dongchang District government account records harvest timing, processing within 24 hours and oak ageing.
A regional wine with several raw-material routes
A narrow harvest window, then a short trip to the tank
A Dongchang District government account describes September 10–25 as a harvest window for Tonghua mountain grapes. It is a reported regional practice, not a fixed calendar for every vineyard in every year.
From the vineyard to the tank
The same Dongchang District account says picked grapes are crushed into a tank within 24 hours. That short interval connects the harvest to the first cellar step.
Oak ageing distinguishes fresh and aged wine
A Dongchang District government account distinguishes fresh wine aged in oak for six to twenty-four months from aged wine kept in oak for more than twenty-four months.
A national standards catalogue entry
The national standards catalogue lists GB/T 20820-2007 as current and records a 2025 review recommending its continuation. This entry documents that national standard; it does not verify the current status or technical clauses of a separate geographical-indication specification.