Vetrate Artistiche Grassi, founded in 1946 by Florindo Grassi, over the years has achieved highly coveted goals and awards, collaborating with world-renowned architects and artists, including: Caccia Dominioni, Capogrossi, E. Castiglioni, Fiume, Niemeyer, Pomodoro, Sassu, Sottsass jr., Spreafico, Usellini, Veronesi, Zanaboni. He has produced work for places of worship, including Milan Cathedral, important and world-renowned abbeys and private homes.

In addition to the production of new stained glass windows, Laboratorio Grassi also specializes in the restoration of old and damaged stained glass windows.