Documentation of statistics: Detailed material flow accounts (physical supply-use tables)
The accounts are based on several sources, for instance, International trade in goods, Purchases and sales by manufacturing industries, and Environmental-Economic Accounts, etc. supplemented by data from reports and websites.
https://www.dst.dk/en/Statistik/dokumentation/documentationofstatistics/detailed-material-flow-accounts--physical-supply-use-tables-
Documentation of statistics