| Business | Phone |
| Baritek Inc 16 Park View Dr, Hingham 2043 | (781) 749-2550 |
| Barth-Watson 10 Causeway Rd, Hingham 2043 | (781) 740-1244 |
| Vine Associates 190 Old Derby St # 311, Hingham 2043 | (781) 749-2530 |
| Systems Engineering Co 16 Elmore Rd, Hingham 2043 | (781) 740-1095 |
| Industrial & Coml Engineers 183 Whiting St # 11, Hingham 2043 | (781) 740-0056 |