| Business | Phone |
| Bend Tooling 1009 Ottawa Ave Nw, Grand Rapids 49503 | (616) 454-9965 |
| Consolidated Metal Prods Inc 3831 Clay Ave Sw, Grand Rapids 49548 | (616) 538-1000 |
| Ludge Tool & Mold 2701 W River Dr Nw, Grand Rapids 49544 | (616) 365-9968 |
| Wil-Kast Inc 8025 Division Ave S, Grand Rapids 49548 | (616) 281-2850 |
| Summit Tooling & Mfg 3903 Roger B Chaffee Memorial, Grand Rapids 49548 | (616) 245-9400 |
| Bohn Engineering Inc 3361 36th St Se, Grand Rapids 49512 | (616) 940-0565 |
| Walker Tool & Die Inc 2411 Walker Ave Nw, Grand Rapids 49544 | (616) 735-6660 |