| Business | Phone |
| Smith Alarms Inc 9934 S Halsted St, Chicago 60628 | (773) 779-8800 |
| Personal Service Mfg Corp 4529 S Knox Ave, Chicago 60632 | (708) 371-2781 |
| Wrap On Co 5550 W 70th Pl, Chicago 60638 | (708) 496-2150 |
| John K Becker & Co 410 S Michigan Ave 1020, Chicago 60605 | (312) 322-1020 |