Considered more ecological cardboard is a first choice to present natural products (wood, lime plaster, clay-based plaster…) or as part of sustainable development projects. Design Duval offers a variety of cardboards: laminated turned-in binder’s board, microbis, or paperboard for the making of customized display units, sample holders, colour charts, folders, boxes. To present brittle materials, we either use cut binder’s board grids that protect the edges of the samples or we invent folded microbis shapes.