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| Company name | Primary business area | Primary coverage | |
|---|---|---|---|
| MOBOTIX AG | CCTV | Global | ![]() |
| Magal Security Systems, Ltd. | CCTV | Israel | |
| Magnet Schultz Ltd. | Access control | United Kingdom (UK) | |
| March Networks Corporation | CCTV | Canada | |
| Marmara Fair Organisation | Exhibition and conference organising | Turkey | |
| Mascotte Ltd. | Exhibition and conference organising | Czech Republic | |
| Mayflex | CCTV | United Kingdom (UK) | |
| Messe Frankfurt | Access control | Germany | |
| Messe Frankfurt New Era | CCTV | Taiwan | |
| MESSOA Technologies Inc. | CCTV | Global | |
| Milestone Systems | Software | Global | |
| MIS Training Institute | Training services | United Kingdom (UK) | |
| MOBOTIX Corp | CCTV | United States of America (USA) | |
| Moxa Europe GmbH | IP networking products | Western Europe | |
| M & E Alarms (Barnstaple) Ltd | CCTV | United Kingdom (UK) | |
| M W Security UK | Electronic article surveillance | United Kingdom (UK) | |
| M&R Electronic Systems, Inc. | Access control | United States of America (USA) | |
| M. Malia & Associates | Integrated security | United States of America (USA) | |
| M.A.C. Security Solutions Ltd. | CCTV | United Kingdom (UK) | |
| M.C. Dean Inc. | Integrated security | United States of America (USA) | |
| M.E.S. Systems Ltd | CCTV | United Kingdom (UK) | |
| M.H.S. Alarm Services Ltd | United Kingdom (UK) | ||
| M.J. Quinn Integrated Services Ltd | CCTV | United Kingdom (UK) | |
| M.P. Alarms (Fire & Security) Ltd | Access control | United Kingdom (UK) | |
| M.T. Electronics | Access control | United States of America (USA) | |
| M15 The Security Service | United Kingdom (UK) | ||
| M2SYS Technology | Biometrics | United States of America (USA) | |
| M3 Force (Pvt) Ltd | CCTV | Sri Lanka | |
| m3 Networks Limited | Biometrics | Australia | |
| M3T Corporation | Integrated security | United States of America (USA) | |


