Jenštejn Glass Group (JGG) is a group centered around a historic glassworks whose roots date back to 1809, making it one of the oldest continuously operating glassworks in the Czech Republic. The group comprises several brands and manufacturing operations, including Janštejn Glassworks, Brokis, Brokisglass, Brokis Solutions, and other specialized production facilities.

For the brand, which uses a modified version of the Atyp typeface as part of its identity, a pair of uppercase display typefaces named JGG Display was developed. The organic rounding of the internal angles of individual characters responds to the shapes traditionally formed in wooden molds used for blown glass production.