| Business | Phone |
| Am-Dyn-Ic Fluid Power Inc 3755 Linden Ave Se, Grand Rapids 49548 | (616) 241-4695 |
| Bond Fluidaire Inc 5506 36th St Se, Grand Rapids 49512 | (616) 942-1060 |
| Donald Engineering Co 3891 Clay Ave Sw, Grand Rapids 49548 | (616) 538-8340 |
| Jacques Engineering 1522 Madison Ave Se, Grand Rapids 49507 | (616) 241-1877 |
| Sun Source 4282 Brockton Dr Se A, Grand Rapids 49512 | (616) 957-5177 |
| Premach Engineering Ltd 750 Curve St Sw, Grand Rapids 49503 | (616) 247-3750 |
| Psi Hydraulic Solutions 1111 Godfrey Ave Sw 5b, Grand Rapids 49503 | (616) 452-8274 |