- 13 Companies at the address Boos-Fremery-Straße 70, 52525 Heinsberg
- Alliander AG- Heinsberg - Holdings and financial services (K64) 
- Alliander Netz Heinsberg GmbH- Heinsberg - Energy supply (D35) 
- Alliander Stadtlicht GmbH- Heinsberg - Energy supply (D35) 
- Alliander Stadtlicht Rhein-Ruhr GmbH- Heinsberg - Handwerk (F43) 
- ENTRNCE Deutschland GmbH- Heinsberg - Holdings and financial services (K64) 
- G IMMO GmbH- Heinsberg - Real estate (L68) 
- Geiser Holding GmbH- Heinsberg - Holdings and financial services (K64) 
- Integrationswerk GmbH & Co. KG- Heinsberg 
- Integrationswerk Verwaltungs-GmbH- Heinsberg - Holdings and financial services (K64) 
- Kenter GmbH- Heinsberg - Architectural and engineering activities, laboratories (M71) 
- NetzPartner Heinsberg GmbH- Heinsberg - Architectural and engineering activities, laboratories (M71) 
- SOCIAL GmbH- Heinsberg - Management and consultancy services (M70) 
- WIR leben HELFEN gGmbH- Heinsberg - Social work (excluding shelters) (Q88)