The Doni family, of Florentine-Tuscan origin, has the majority shareholding of DEF, and set off along the road of the ceramic tile industry in 1946, under the guidance of Ranieri Doni.
In 1970, he established the Colorificio Doni Spa, based in Conselice, which, in 1976 was sold to an English multinational.

In 1979 Ranieri, together with his son Roberto, founded DEF di R. Doni Spa and, over the following years, his grandchildren, Laura and Riccardo also joined the company, intent on continuing the 60-year tradition of theDoni family.

Def Mediterraneo was established in Villarreal in 2007 and initially, trade focused on the Spanish, North African and South American markets.

Def is convinced that achieving total customer satisfaction is the most important goal to pursue, which is why it strives to ensure maximum product quality and the best possible support, day by day.
Def has always invested major resources in its research and development activities, in order to identify new products and continuously improve its existing ones.

The laboratory boasts equipment and tools at the cutting edge of technology that guarantee quality products and customer support in designing and industrialising their products.