| Business | Phone |
| Trantek Automation Inc 2680 Elmridge Dr Nw, Grand Rapids 49534 | (616) 453-0126 |
| Automation Equipment Solutions 1345 Monroe Ave Nw, Grand Rapids 49505 | (616) 771-4237 |
| Competition Components Inc 4890 Kendrick St Se, Grand Rapids 49512 | (616) 235-2667 |
| Edr Inc O-13725 Ironwood Dr Nw, Grand Rapids 49534 | (616) 677-2700 |
| I D Engineering & Automated 3950 44th St Se, Grand Rapids 49512 | (616) 656-0182 |
| Industrial Service Technology 3286 Kentland Ct Se, Grand Rapids 49548 | (616) 247-1033 |
| Rose Technologies 1440 Front Ave Nw, Grand Rapids 49504 | (616) 233-3000 |
| Metrotec Inc 2935 Walkent Ct Nw B, Grand Rapids 49544 | (616) 784-2200 |