 Detroit Chrome Electro Forming Company | Detroit | — | ◐ LIKELY ACTIVE |
| ECElectro Chemical Finishing | Wyoming | — | ◐ LIKELY ACTIVE |
| MBMarshall Brass | Marshall | — | ◐ LIKELY ACTIVE |
| NGNational Galvanizing Hs Processing LP | Monroe | — | ◐ LIKELY ACTIVE |
| NMNitrex Metal Technologies INC | Mason | — | ◐ LIKELY ACTIVE |
| PHParker Hannifin Corporation | Lakeview | — | ◐ LIKELY ACTIVE |
| SMSmw Mfg Amsted Automotive Group-munith | Munith | — | ◐ LIKELY ACTIVE |
| SAStelmi America LLC | Marshall | — | ◐ LIKELY ACTIVE |
| TMTrans Matic Manufacturing Company | Holland | — | ◐ LIKELY ACTIVE |
 Advanced Heat Treat CORP | Monroe | — | ◇ UNVERIFIED |
| AMAlco Manufacturing Corporation | Dexter | — | ◇ UNVERIFIED |
| AMAlpha Metal Finishing CO | Dexter | — | ◇ UNVERIFIED |
| ACAnchor Coupling INC | Menominee | — | ◇ UNVERIFIED |
| AEArcosa Epi LLC | Mason | — | ◇ UNVERIFIED |
| ASArcosa Shoring Products INC | Union City | — | ◇ UNVERIFIED |
| AIArmstrong Intl INC | Three Rivers | — | ◇ UNVERIFIED |
| AAAtmosphere Annealing - Bassett Fac | Lansing | — | ◇ UNVERIFIED |
| AAAuto Anodics | Port Huron | — | ◇ UNVERIFIED |
| ACAutocam Corporation | Marshall | — | ◇ UNVERIFIED |
| APAutocam Precision Components a Division of Nn INC | Kentwood | — | ◇ UNVERIFIED |
| BSBerkley Screw Machine Products INC | Rochester Hills | — | ◇ UNVERIFIED |
| BFBharat Forge America INC. | Lansing | — | ◇ UNVERIFIED |
| BMBorisch Manufacturing CORP | Grand Rapids | — | ◇ UNVERIFIED |
| CPCadillac Plating CORP | Warren | — | ◇ UNVERIFIED |
| DIDapco Industries | Dexter | — | ◇ UNVERIFIED |
| DIDepor Industries | Troy | — | ◇ UNVERIFIED |
| FEFleet Engineers, INC. | Muskegon | — | ◇ UNVERIFIED |
| FFFlex-n-gate Forming Tech | Warren | — | ◇ UNVERIFIED |
| FMFord Motor CO - Woodhaven Forging Plant | Woodhaven | — | ◇ UNVERIFIED |
| GIGlastender INC | Saginaw | — | ◇ UNVERIFIED |
| HFHhi Formtech-fraser | Fraser | — | ◇ UNVERIFIED |
| HFHhi - Formtech LLC | Troy | — | ◇ UNVERIFIED |
| HCHi-tech Coatings INC | Warren | — | ◇ UNVERIFIED |
| HPHumphrey Products | Kalamazoo | — | ◇ UNVERIFIED |
| ISIndustrial Steel Treat CO | Jackson | — | ◇ UNVERIFIED |
| JCJohnson Controls Interiors - Battle Creek | Battle Creek | — | ◇ UNVERIFIED |
| KJKadant Johnson INC | Three Rivers | — | ◇ UNVERIFIED |
| KCK C Jones Plating CO Div of Chemetco | Hazel Park | — | ◇ UNVERIFIED |
| KIKepco INC | Vicksburg | — | ◇ UNVERIFIED |
| KSK&k Screw Products LLC | East China | — | ◇ UNVERIFIED |
| KVKnape & Vogt Mfg CO | Grand Rapids | — | ◇ UNVERIFIED |
| LSLinamar Structures USA | Southfield | — | ◇ UNVERIFIED |
| MEMarshall Excelsior CO | Marshall | — | ◇ UNVERIFIED |
| MMMascotech Manufacturing & Assembly Oper | Brighton | — | ◇ UNVERIFIED |
| MFMaster Finish | Grand Rapids | — | ◇ UNVERIFIED |
| MUMersen USA Bn Corp, Bay City Branch | Bay City | — | ◇ UNVERIFIED |
| MMMichigan Metal Coatings | Port Huron | — | ◇ UNVERIFIED |
| MTMiddleville Tool and Die-treatment Plant 01 | Middleville | — | ◇ UNVERIFIED |
| MSMid State Plating CO. | Flint | — | ◇ UNVERIFIED |
| MHModern Hard Chrome Service CO | Warren | — | ◇ UNVERIFIED |
