| Business | Phone |
| Mc Clave Engineering 100 Lawrence Ave # 203, Smithtown 11787 | (631) 265-8921 |
| Cobe Welding 210 Brooksite Dr, Smithtown 11787 | (631) 265-3422 |
| J Gaughan & Assoc Inc 22 Lawrence Ave, Smithtown 11787 | (631) 265-6666 |
| Raf Services Inc 811 W Jericho Tpke # 108, Smithtown 11787 | (631) 863-2065 |
| Jrl Networks 53 Ruth St, Smithtown 11787 | (631) 361-2000 |
| Select Energy Svc Inc 811 W Jericho Tpke # 811, Smithtown 11787 | (631) 361-6200 |
| Terbush Inspection Svc Inc 186 W Main St, Smithtown 11787 | (631) 361-9858 |