| Business | Phone |
| Lathrop Machine 5020 Industrial Park Rd, Montague 49437 | (231) 894-5743 |
| Pioneer & Tool Mfg Co 8155 Cook St, Montague 49437 | (231) 893-0885 |
| White Lake Machine Inc 5145 Industrial Park Rd, Montague 49437 | (231) 893-3205 |
| Armstrong Tool 4095 Fruitvale Rd, Montague 49437 | (231) 893-2190 |