Created in 1984, SDI is a company from Châteaubriant area which specializes in industrial markings, signposting and advertising panels, using screen printing, decalcomania, painting and pad printing techniques on many support surfaces.

SDI is a 12 people team, skilled in computer graphics, printing techniques and signposts making, which develops an increasing sales revenue since 2015, attaining 900 k€ in 2019. Customers are principally industrials needing markings on their parts or products. Other customers are local collectivities or businesses needing to develop their communication.

SDI is currently exploring a concept of innovative products in the extension of its know-how: a flexible, customizable, intelligent and ecological lamp, in order to continue its business development and ensure its sustainability.