| Business | Phone |
| Mdi Industries Inc 120 E Jefryn Blvd, Deer Park 11729 | (631) 254-3100 |
| Diamond Sheet Metal Corp 151 W Industry Ct # 11, Deer Park 11729 | (631) 243-3700 |
| Fabrication Specialities Corp 2 Saxwood St # G, Deer Park 11729 | (631) 242-0326 |
| Heritage Air Systems Inc 305 Suburban Ave, Deer Park 11729 | (631) 667-1044 |
| Hrd Metal Products Inc 120 E Jefryn Blvd, Deer Park 11729 | (631) 243-6700 |
| Precision Sheet Metal 18 Evergreen Pl # C, Deer Park 11729 | (631) 595-2473 |
| Royce Steri-Case Inc 66 E Jefryn Blvd # C, Deer Park 11729 | (631) 242-9010 |
| Woodbine Products Inc 701 Grand Blvd, Deer Park 11729 | (631) 586-3770 |