| Business | Phone |
| A & Kcnc Machining Inc 1852 Janke Dr, Northbrook 60062 | (847) 559-1760 |
| Foremost Machinery Corp 425 Huehl Rd 14b, Northbrook 60062 | (847) 272-7881 |
| Concepts & Controls 340 Melvin Dr 2, Northbrook 60062 | (847) 272-3740 |
| Sobot Tool & Mfg Co 3975 Commercial Ave, Northbrook 60062 | (847) 480-0560 |