| Business | Phone |
| Umer Engineering Co 4261 Green Ridge Dr, Marietta 30062 | (770) 565-6511 |
| Visual Engineering 5625 Asheforde Ln, Marietta 30068 | (770) 598-4804 |
| Terranova Engineering Inc 5025 Deen Rd, Marietta 30066 | (678) 445-0844 |
| Clifton Precision South 840 Kennesaw Ave Nw, Marietta 30060 | (770) 499-2070 |
| Dietary Engineering Inc 1817 Ashborough Cir Se, Marietta 30067 | (678) 354-9949 |
| Engineering Tools Assoc 1059 Triad Ct, Marietta 30062 | (678) 581-1473 |
| Foothills Engineering Inc 4405 Rosemary Ct Ne, Marietta 30066 | (770) 384-8529 |
| Southeastern Engineering Inc 2470 Sandy Plains Rd A, Marietta 30066 | (770) 321-3936 |
| Stewart Caldwell & Assoc Inc 306 Lakeshore Dr Ne, Marietta 30067 | (404) 374-5023 |
| Guhdo Tooling Svc 1135 Jvl Ct, Marietta 30066 | (770) 592-4766 |
| Reduction Engineering 2932 Summitop Rd Ne, Marietta 30066 | (770) 928-5964 |
| J & A Engineering Llc 4343 Shallowford Rd F5, Marietta 30062 | (770) 973-4961 |
| J P Engineering 1360 Austell Rd Se, Marietta 30008 | (770) 356-4620 |
| Micromotion Engineering 3371 Fawn Trl, Marietta 30066 | (770) 337-5908 |
| Modern Engineering Inc 1950 Spectrum Cir Se # 400, Marietta 30067 | (678) 921-2848 |
| Kohlhoff Engineering & Consult 4840 Township Rdg, Marietta 30066 | (770) 642-4840 |
| All Metering Solutions 3042 Bristlewood Ln Nw, Marietta 30064 | (770) 428-5521 |
| Brick Engineering & Constr 2692 Sandy Plains Rd, Marietta 30066 | (678) 888-0156 |
| Briglevich Engineering Inc 615 Shay Dr Sw, Marietta 30060 | (770) 438-0106 |