| Business | Phone |
| Tmc Co 41907 Irwin Dr, Harrison Townshi 48045 | (586) 468-7330 |
| Tri-Matics Mfg Inc 25500 Henry B Joy Blvd, Harrison Townshi 48045 | (586) 469-3150 |
| Barcoa Manufacturing Inc 41841 Irwin Dr, Harrison Townshi 48045 | (586) 465-1307 |
| Shores Tool & Mfg 41903 Irwin Dr, Harrison Townshi 48045 | (586) 783-6015 |
| Spirit Tool 41949 Irwin Dr, Harrison Townshi 48045 | (586) 954-9190 |
| C & J Turning & Machining 41239 Irwin Dr, Harrison Townshi 48045 | (586) 465-6875 |
| Power Industry 42279 Irwin Dr, Harrison Townshi 48045 | (586) 783-3818 |
| Five Star Mold & Engineering 40380 Production Dr, Harrison Townshi 48045 | (586) 463-5460 |
| K-K Machine Tools Inc 42017 Irwin Dr, Harrison Townshi 48045 | (586) 463-1177 |
| Mikbeth Manufacturing Inc 41901 Irwin Dr, Harrison Townshi 48045 | (586) 783-8901 |
| Vern Inc 41581 Irwin Dr, Harrison Townshi 48045 | (586) 461-0023 |