Made of Air HexChar moulded cladding on the Audi dealership in Munich. Completed in 2021, this is the first time the product was installed on a building, providing a distinctive design and protection against the elements. While the matrix is UV resistant bio-based polymer, the additive is produced from biochar that is derived from waste wood biomass leftover from production. If the sequestered carbon of the wood is taken into account then this results in a carbon negative product. Image Made of Air.