| Business | Phone |
| Cma Construction Engineer 500 Calhoun St, Columbia 29201 | (803) 252-2440 |
| G S Two Engineering 1401 Saint Andrews Rd, Columbia 29210 | (803) 750-0099 |
| Martin Engineering 931 Longtown Rd, Columbia 29229 | (803) 788-0409 |
| Pactiv Corp 3031 Scotsman Rd, Columbia 29223 | (803) 736-9920 |
| Srs Engineering Inc 1226 Bull St, Columbia 29201 | (803) 252-1488 |
| T Be Group Inc 200 Arbor Lake Dr # 115, Columbia 29223 | (803) 333-0043 |
| Wpc Engineering Environmenta 800 Gervais St, Columbia 29201 | (803) 790-7443 |