| Business | Phone |
| Metalsmith Inc 1340 Lincoln Ave, Holbrook 11741 | (631) 467-1500 |
| Mico Precision Inc 929 Lincoln Ave # 5, Holbrook 11741 | (631) 563-9353 |
| Read Manufacturing Co 330 Dante Ct, Holbrook 11741 | (631) 580-4800 |
| Twin County Sheet Metal Inc 430 Saint James St, Holbrook 11741 | (631) 585-4300 |