I tried this cold served light and fresh kind of vietnamnese spring roll in a little restaurant which I very much like. Its called Com Viet and located close to Hackescher Markt and Alexanderplatz in the center of Berlin.

More details here: https://www.yelp.de/biz/com-viet-berlin

Update
In some restaurants they are called “summer roll”. (Thanks to yaraghchi)