Association Industrial Cluster Srednogorie was established in the autumn of 2005. The Cluster is formed on an industry-regional basis. Leading companies in its initiation were Assarel – Medet, Aurubis Bulgaria, Ellatzite – Med, Dundee Precious Metals Chelopech and Geotechmin. Cluster members are: Assarel–Medet, Aurubis Bulgaria, Ellatzite–Med, Dundee Precious Metals Chelopech, Geotechmin, Air Liquide Bulgaria, Eurotest–Control, Energeo, Optix Co, Opticoelectron Group, Centre for Management and Vocational Training, Geostroy, Siemens Bulgaria, Geotrading, Argus, MP-Metalplast, Oloplast Group, CMC-C, GeoSolve, Ipsilon- Ivan Ivanov, Paradox, Retel, Simplex – Rabadjiyska & Co, Sofia University “St. Kliment Ohridski” ,University of mining and geology “St.IvanRilski”, Technical university – Sofia, University of Forestry (UF) – Sofia, University of Chemical Technology and Metallurgy (UCTM), Municipality of Anton, Municipality of Chelopech, Municipality of Chavdar, Municipality of Panagyurishte, Municipality of Pirdop, Municipality of Mirkovo, Municipality of Strelcha, Municipality of Zlatica, Municipality of Koprivshtitsa and Municipality of Etropole.