 In 2004, "MG technologies AG" sold its chemical activities to emphasise the manufacture of equipment.Therefore, Dynamit Nobel AG was dismantled and taken over by several companies.The American company "Rockwood Specialties Group Inc", the largest buyer, acquired "Sachtleben Chemie GmbH", "Chemetall GmbH", "CeramTec Innovative Ceramic Engineering AG" and "DNSC GmbH" as of 31 July 2004 for 2.25 billions of euros through its Luxemburg subsidiary Knight Lux 1 S.A.R.L.. Part of DNSC GmbH remains in Leverkusen and is known as "Dynamit Nobel GmbH ES."