| Business | Phone |
| Ipc Intl 1001 Market St, Philadelphia 19107 | (215) 629-1953 |
| Precheck Security 6323 Frankford Ave, Philadelphia 19135 | (215) 333-6800 |
| Roman Sentry Security Systems 1005 Spring Garden St, Philadelphia 19123 | (215) 236-7000 |
| Sonic International 1733 Spruce St, Philadelphia 19103 | (215) 790-1300 |
| Sonic Services 1530 Locust St # 87, Philadelphia 19102 | (215) 790-1300 |
| U S Security Svc 5249 Chestnut St, Philadelphia 19139 | (215) 474-0505 |
| United States Protective Svc Philadelphia 19120 | (215) 455-6604 |