| Business | Phone |
| Srd Engineering 110 E Volusia Ave # C, Deland 32724 | (386) 740-7809 |
| Davis & Cleaton Engineering 304 N Woodland Blvd, Deland 32720 | (386) 738-7475 |
| Ferrara Engineering Inc 200 W Wisconsin Ave, Deland 32720 | (386) 734-8792 |
| Neal Shaffer 115 E Indiana Ave, Deland 32724 | (386) 740-7707 |