Data from ÖKOBAUDAT, the German database for environmental information on construction products, operated by the Bundesinstitut für Bau-, Stadt- und Raumforschung (BBSR). The environmental product declarations it carries are third-party-verified under EN 15804 and remain the property of their programme holders and dataset owners; the figures are declared by the dataset owner, not measured by the BBSR. This document is a Linked Data rendering, not the authoritative record — dereference prov:hadPrimarySource for that.