| Business | Phone |
| Chrysalis Group Inc 422 Bishop Dr, Hockessin 19707 | (302) 234-7961 |
| Innovative Resources Inc Po Box 252, Hockessin 19707 | (302) 239-7422 |
| Seastate Group 144 Dantes Dr, Hockessin 19707 | (302) 234-8188 |
| Zeisler Associates Po Box 484, Hockessin 19707 | (302) 234-2761 |