| Business | Phone |
| Royal Oak Manufacturer 2800 W 14 Mile Rd, Royal Oak 48073 | (248) 288-8888 |
| Rkd Industries 2646 Galpin Ave, Royal Oak 48073 | (248) 280-3860 |
| Factory Direct Plus 607 9th St, Royal Oak 48067 | (248) 546-1181 |
| Enhanced Polymers Inc 4902 Delemere Ave, Royal Oak 48073 | (248) 280-0575 |
| Clayton Machine Corp 332 E Lincoln Ave, Royal Oak 48067 | (248) 548-2380 |
| Holden Manufacturing 4902 Delemere Ave, Royal Oak 48073 | (248) 288-3781 |
| K D Industries Po Box 798, Royal Oak 48068 | (248) 554-9916 |