| Business | Phone |
| Summit Polymers 15101 N Commerce Dr, Dearborn 48120 | (313) 583-6000 |
| Plastech Engineered Prods Inc 22000 Garrison St, Dearborn 48124 | (313) 791-8140 |
| Plastech Engineered Prods Inc 835 Mason St, Dearborn 48124 | (313) 791-3001 |
| Excel Pattern Works Inc 7020 Chase Rd, Dearborn 48126 | (313) 581-1150 |
| Global Composite Solutions 550 Town Center Dr, Dearborn 48126 | (313) 982-1435 |