Two well-known companies, Hallbyggarna i Falun AB and Jonsereds Miljösystem AB were amalgamated in 2003. Since both companies were well-known and had a good reputation, Hallbyggarna-Jonsereds was created as a trade name and was used in marketing. The name of the legal person was NSS Sverige AB, however.
In the spring of 2009, the company changed its registered name to Hallbyggarna-Jonsereds AB. This was to avoid the confusion that sometimes arose about the company's name. Nothing else was changed, and Hallbyggarna-Jonsereds will continue to be part of the NSS Group (Nordic Shelter Solution), which is based in the Nordic area.
In the fall of the 2009 Hallbyggarna-Jonsereds AB created a secondary name for there international affairs, the name is NSS International.