From their home page (retrieved May 7 2017):
"Passend zu unserem Lebensstil, sind unsere Weine ab dem Jahrgang 2015 natürlich alle vegan."
[Translation: "In accordance with our lifestyle, starting from 2015 all our wines are
of course vegan"]
Trautwein Wines (2015 onwards)
Vegan
This product is listed as vegan friendly.
What the company told us
Correspondence on record, with the date of each entry.