| Business | Phone |
| Aztec Private Investigations 118 E Huntington Dr # E, Alhambra 91801 | (626) 576-5200 |
| Chan Yang Investigation Intl 317 W Main St # 305, Alhambra 91801 | (626) 571-4488 |
| Tearle Corp 317 W Main St, Alhambra 91801 | (626) 282-6921 |
| Information Protection Svc Inc 919 S Fremont Ave, Alhambra 91803 | (626) 943-8501 |