| Business | Phone |
| Astro Craft Inc 7509 Spring Grove Rd, Spring Grove 60081 | (815) 675-1500 |
| Tru-Machine Co 1615 Spruce St, Spring Grove 60081 | (815) 675-6735 |
| C & M Mfg 2222 Pierce Dr A, Spring Grove 60081 | (815) 675-9105 |
| Dynamic Machining 2304 Spring Ridge Dr C, Spring Grove 60081 | (815) 675-3330 |
| Rago Machine Products Inc 2400 Highview St, Spring Grove 60081 | (815) 675-2346 |
| Olson Machining Inc 1804 Holian Dr, Spring Grove 60081 | (815) 675-2900 |
| Pat-Lin Enterprises 2907 W Us Highway 12, Spring Grove 60081 | (815) 675-6606 |