| Business | Phone |
| Reliable Office Machine 3318 Morse Rd, Columbus 43231 | (614) 471-9027 |
| Retail Business Systems 398 Morrison Rd, Columbus 43213 | (614) 759-8900 |
| Retail Data Systems 2943 Switzer Ave, Columbus 43219 | (614) 253-8915 |
| Electronic Management Systems 37 Robinwood Ave, Columbus 43213 | (614) 239-9393 |
| Great Lakes Hamco 181 N Hamilton Rd # P, Columbus 43213 | (614) 863-9000 |