| Business | Phone |
| D & S Manufacturing 1010 Front Ave Nw, Grand Rapids 49504 | (616) 643-0961 |
| Global System Installers Inc 5770 Eastern Ave Se, Grand Rapids 49508 | (616) 443-3981 |
| State Conveyor Svc Inc 3333 Leonard St Nw, Grand Rapids 49534 | (616) 453-5413 |
| Siemens Dematic Rapistan Div 4147 Eastern Ave Se, Grand Rapids 49508 | (616) 913-6700 |
| Siemens Logistics & Assembly 507 Plymouth Ave Ne, Grand Rapids 49505 | (616) 913-6700 |