| Business | Phone |
| Wang Electro-Opto Corp 2140 New Market Pkwy Se 110, Marietta 30067 | (770) 955-9311 |
| Hubbell Inc 1511 Johnson Ferry Rd, Marietta 30062 | (770) 565-2183 |
| Levine Electronics & Electric 200 Powers Ferry Rd Se, Marietta 30067 | (770) 565-1556 |
| Barnett 4012 Kingston Ct Se, Marietta 30067 | (770) 272-9092 |