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Alpha Security - (Haarlem)
Brabant Security - ('s-Hertogenbosch)
G4S Events Services - (Brussel)
Holkema Group - (Diemen)
Nelson Security - (Zaandam)
PPS Investment Protection - ('s-Hertogenbosch)
Rowa Security - (Woerden)
RVD Security - (Haarlem)
The Security Company - (Utrecht)
To Serve and Protect - (Mijdrecht)
Trigion - (Schiedam)
World Wide Security - (Wormerveer)