| Business | Phone |
| A-1 Lapping & Machine 539 Grable St, Rockford 61109 | (815) 398-1465 |
| A-American Machine & Assembly 2620 Auburn St, Rockford 61101 | (815) 965-0882 |
| August Co 607 Parkside Dr, Rockford 61108 | (815) 229-5324 |
| Target Laser & Machining Inc 2500 N Main St 1, Rockford 61103 | (815) 963-6706 |
| Steel Cutters Inc 2605 Huffman Blvd, Rockford 61103 | (815) 965-0191 |