The Olnasa Stone & masonry workshop was created in the 90's and is now one of the major companies of its sector in Aragón, Spain. They are specialized not only in extracting raw materials but also in treatment and commercialization of their natural sandstones, which come from their own quarries in Aragón.
The products commercialized by Olnasa are of high quality and come with a guarantee based on the ISO 9001 certification as well as the CE mark for natural stones. Together with Olnasa's engineers, the I+D+i (deparpment for research, development and innovation) continuosly controls the quality of Olnasa products. Furthermore, they are offering their customers a special information service for proper use of the materials.