RIAS A/S was founded in 1959. The company produced and sold cast acrylic sheets.
1959 - Knud E. Jacobsen founds RIAS (Roskilde Industri Aktie Selskab) in Roskilde. The company produces cast acrylic sheets
1963 - The activities are supplemented with distribution of plastic semi-manufactures
1973 - Establishment of subsidiary in Stockholm
1975 - Establishment of subsidiary in Oslo
1985 - RIAS becomes listed on the Copenhagen Stock Exchange
1987 - The Knud E. Jacobsen family, sells the majority shareholding to the Finnish Amer Group
1988 - Acrylic sheet production sold off to Repsol Quimica S.A.
1990 - The Amer Group sells its shareholding to Thyssen Handelsunion AG, Germany. During the following months and years, the activities in the foreign subsidiaries are wound up, and RIAS subsequently concentrates on its core activities on the Danish market
1993 - New and efficient warehouse and distribution facilities in Roskilde taken into use.
1996 - Thyssen Handelsunion AG´s subsidiary Thyssen Schulte GmbH (name changed to Thyssen Krupp Werkstoffe GmbH in 1999) acquired the shares in RIAS owned by Thyssen Handelsunion AG.
1997 - RIAS consolidates its leading position on the Danish market for plastic semi-manufactures by taking over the plastic activities from Tibnor Danmark A/S
1999 - RIAS acquires the processing company Akni Plast ApS, now named RIPRO (RIAS Production), as part of RIAS’ strategy to offer its customers industrial processing of plastic semi-manufactures of a high level of craftsmanship, including laser cutting, milling, bending, drilling, gluing and polishing.
2001 - On 5 February 2001, Thyssen Krupp Werkstoffe GmbH transferred its shares in RIAS to Thyssen Röhm Kunststoffe GmbH, which was thenceforward RIAS A/S´ new parent company.
2002 - RIAS takes over the activities in RODENA A/S, thus significantly strengthening its position as a supplier of plastic products and accessories to DIY centres and superstores in Scandinavia.
2006 - Inauguration of a modern warehouse building of 2400 square metres, after which all RIAS’ activities are gathered at Industrivej in Roskilde. Concurrently, the administrative premises are refurbished and extended with new conference facilties and reception.
2008 - RIAS take over all shares in Nordisk Plast A/S.
2009 - Nordisk Plast inaugurates 6,000 m2 of new and modern warehouse and administration premises in Assentoft near Randers.
RIAS A/S is today the leading supplier of plastic semi-manufactures to industry, the building sector and the public sector in Denmark, and the company forms part of the leading plastics division in Europe in the ThyssenKrupp Röhm Kunststoffe Group.