The Querandí glass company primarily produced artistic glass with a distinctive style.
- From 1957 to 1976, Hubertus Ullmann transformed the family-owned Cristaleria Querandi S.A. into the leading colored glass factory in South America, fusing South American raw materials and minerals for the production of overlay colors.
- It incorporated techniques such as blowing inside hollowed-out logs, resulting in organic shapes and particular textures.
- They also employed the acid-etching technique, often with abstract or geometric designs, and in some cases, enameling.
- The "sommerso" (submerged glass in layers of color) technique was used.
- They manufactured for Ilum and commercialized their own artisanal line in Churba's stores.
- Some "Querandí" pieces are collectible today.
