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| Company name | Primary business area | Primary coverage | |
|---|---|---|---|
| Nedap Security Management | Access control | Global | |
| Network Video Technologies | CCTV | Global | |
| Notting Hill Media | Media | Global | |
| NUUO, Inc. | Software | Taiwan | |
| N-Patrol Security Systems Inc. | CCTV | Canada | |
| n-tree solutions Ticketsysteme GmbH | Access control | Austria | |
| N.S.G. Security Consultants | CCTV | United Kingdom (UK) | |
| N.T. Systems | CCTV | United Kingdom (UK) | |
| N.V.Technoa | CCTV | India | |
| NACD Limited | Access control | United Kingdom (UK) | |
| NACD Ltd | Security entrances | United Kingdom (UK) | |
| NACOSS | Access control | United Kingdom (UK) | |
| NADHI MENTERA ENG.SDN BHD | CCTV | Malaysia | |
| Najeeb Establishment for Safety | Fire safety | Saudi Arabia | |
| Nanodems | Software | Turkey | |
| Napco Group Europe Ltd | Intruder alarm | United Kingdom (UK) | |
| NAPCO Security Systems Inc | Intruder alarm | Global | |
| Napco Security Technologies, Inc | Access control | United States of America (USA) | |
| Napco Security Technologies, Inc. | Access control | United States of America (USA) | |
| NasaSafe Co.,LTD | CCTV | South America | |
| Nasatka Barrier, Inc. | Gates and barriers | United States of America (USA) | |
| NASCOM | Magnetic switches | United States of America (USA) | |
| naseba | Training services | Global | |
| Nastec | CCTV | United Kingdom (UK) | |
| Natel Industries Co.(NICO) | Access control | Middle East | |
| Nater Associates, Ltd | CCTV | United States of America (USA) | |
| National - Field Support Specialist, LLC | Support for field investigators and security professionals | United States of America (USA) | |
| National Association of Campus Card Users (NACCU) | Cards and readers | United States of America (USA) | |
| National Association of Security Companies (NASCO) | United States of America (USA) | ||
| National Association of Security Dog Users | United Kingdom (UK) | ||



