Rosenberger-OSI GmbH & Co. OHG


  • 1991 Rosenberger OSI is founded for the purpose of developing innovative fiber-optic cabling concepts for data communication
  • 1992 After completing its successful development we are the first company to supply multi-fiber OSI PreCONNECT® Trunk systems for cabling of data centers
  • 1997 Owing to the huge demand for OSI PreCONNECT® products, we expand our production capacity. The new factory in Hungary, OSI KFT, starts with production
  • 1998 We join the Rosenberger Group. Start development of MTP®/MPO trunk systems
  • 2000 Rosenberger OSI presents PreCONNECT® Trunk systems with 144 fibers. We continue to develop our products, allowing us to increase our leadership position as a manufacturer of multi-fiber systems. Product innovations like the MTP®/MPO multi-fiber connector are the basis of our technology. Receipt of the first IBM FTS qualification
  • 2001/2002 To meet the growing demand, we expand our plant in Taksony (Hungary), resulting in a doubling of our production capacity and a restructuring of logistics. During this period we also move into our new location in Augsburg, providing optimum services for our customers
  • 2004 Development and introduction of the rugged Heavy Duty 600 connector system for use in broadcasting and industry
  • 2008 Rosenberger OSI becomes a connector manufacturer and launches volume production of SC, LC and MU fiber-optic cable connectors
  • 2010 First large-scale deployment of PreCONNECT® trunk systems on cell towers
  • 2011 In response to considerable growth in demand, Rosenberger OSI expands its production and logistics facilities in Taksony, Hungary, by more than 1,500 square meters
  • 2012 Establishment of the service point in Frankfurt am Main
  • 2013 Development of the PreCONNECT® PURE premium cabling system for greater security and higher performance in passive IT cabling, certified by GHMT
  • 2014 Further expansion of our logistics capacities in Taksony by 500 square meters. Market launch PreCONNECT® 
  • 2015 Introduction of Compass, a new corporate structure encompassing core processes, management processes and support. Establishment of our European branch offices in France (Paris) and Italy (Vimercate)
  • 2019 New production site in Apodaca/México
  • 2020 Aquistion of Hau GmbH & Co. KG. Market launch PreCONNECT® SEDECIM
  • 2021 Anniversary: 30 years Rosenberger OSI
  • 2024 Automation of the 3M EBO latch connector assembly |  Aquistion of ET Netzwerk- und Datentechnik