Gypsum Recycling International A/S (GRI) is a recycling company based in Nærum, Rudersdal Municipality, Denmark. GRI offers a system for the recycling of gypsum and plasterboard/drywall waste. The company started its operations in Denmark in 2001. It originated from the largest demolition company in Scandinavia and based on these experiences developed a unique gypsum recycling system. Within a few years, GRI increased the recycling rate for gypsum waste in Denmark up to a world record of 80%.5