Tredi is the division of the Dierre group specialized in the production of closings firebreak approved according to the regulation and of metal interior doors. While operating in a sector as delicate as that of protector of the people and goods against fire, Tredi guarantees products of controlled and constant quality. It is indeed the company which obtained the greatest number of official certificates in France and Europe. For this reason Tredi is essential the greatest rigor as for the design, with the tests carried out in laboratory and the technological advance of the production lines, entirely automated and managed by computing systems. The activity of the technicians and specialized retailers Tredi covers all France: they offer councils installation design to all the levels for all the products of a complete range. Tredi is also equipped with a chain of production for the metal doors of service.
