| Business | Phone |
| Advanced Numerical Solutions 3956 Brown Park Dr # B, Hilliard 43026 | (614) 771-4861 |
| Wec Engineers Of Ohio Inc 3455 Mill Run Dr # 310, Hilliard 43026 | (614) 921-8888 |
| Sivey Enterprises 4790 Hayden Crest Rd, Hilliard 43026 | (614) 777-0117 |
| Sauls Seismic Inc 3960 Brown Park Dr, Hilliard 43026 | (614) 771-4855 |
| Rouse Associates 3909 Braidwood Dr, Hilliard 43026 | (614) 771-4261 |
| Jla Engineering 3481 Amity Rd, Hilliard 43026 | (614) 878-7932 |