| Business | Phone |
| Altana Inc 610 Lincoln St, Waltham 2451 | (781) 290-2500 |
| Engineering Intent 950 Winter St, Waltham 2451 | (781) 290-5336 |
| Boston Engineering Corp 26 Fox Rd, Waltham 2451 | (781) 466-8010 |
| Fronek Power Systems Llc 300 Bear Hill Rd, Waltham 2451 | (781) 487-0132 |
| Pharos 85 1st Ave, Waltham 2451 | (781) 622-5070 |
| Infoscitex Corp 195 Bear Hill Rd, Waltham 2451 | (781) 890-1338 |