French firm Constellium will invest totally EUR 22.5m in its Děčínn plant into technologies for the production of hard alloy bars and profiles. The continued investment in the plant in Dečínn will further expand the production capacity and meet increasing demand from automotive customers across Europe, said Paul Warton, President of Constellium’s Automotive Structures and Industry business unit. Constellium is a supplier for the aviation, automotive, building, transport and energy industries.