| VSV & S Delaware Galvanizing LLC | New Castle | 20–99 | ● ACTIVE |
 A&f Machine Development LLC | Newark | — | ● ACTIVE |
 Apex Manufacturing Group INC | Newark | — | ● ACTIVE |
 Polarstar Engineering & Machine, LLC | Newark | — | ● ACTIVE |
 R. C. Fabricators, INC. | Wilmington | — | ● ACTIVE |
 Allied Precision, INC. | Middletown | — | ● ACTIVE |
 Building Concepts of America, INC. | Newark | — | ● ACTIVE |
 Chuck George INC | Wilmington | — | ● ACTIVE |
| CSCompass Systems & Sales LLC | Wilmington | — | ● ACTIVE |
 Cowboy Painting Company LLC | Middletown | — | ● ACTIVE |
| DIDiamond Industrial INC | Wilmington | — | ● ACTIVE |
 Forcebeyond LLC | New Castle | — | ● ACTIVE |
 Industrial Metal Treating CORP | Wilmington | — | ● ACTIVE |
 Machinist Mate Services LLC | Newark | — | ● ACTIVE |
 Msi Fab LLC | Newark | — | ● ACTIVE |
 Omni Services, INC. | New Castle | — | ● ACTIVE |
 Strong Women Industrial Materials, LLC | Bear | — | ● ACTIVE |
 Thermal Pipe Systems INC | Wilmington | — | ● ACTIVE |
 Tuskegee Aeronautical Engineering INC | Wilmington | — | ● ACTIVE |
| CWColor Works Painting - Edwards Avenue | New Castle | — | ◇ UNVERIFIED |
| OSOwen Steel Company | Wilmington | — | ◇ UNVERIFIED |
| DTDuhadaway Tool & Die Shop INC | Newark | — | ◐ LIKELY ACTIVE |
| ICIndustraplate CORP | Wilmington | — | ◐ LIKELY ACTIVE |
| SASatys Aftermarket Delaware LLC | New Castle | — | ◐ LIKELY ACTIVE |
| SSSummit Steel, INC. | New Castle | — | ◐ LIKELY ACTIVE |
| ADAlderman Datsun | New Castle | — | ◇ UNVERIFIED |
| CDChrome Deposit Corporation | Newark | — | ◇ UNVERIFIED |
| HTHarper Thiel | Wilmington | — | ◇ UNVERIFIED |
| HDHomalite Div of Brandywine Inv Group | Wilmington | — | ◇ UNVERIFIED |
| IMInternational Mill Service | Claymont | — | ◇ UNVERIFIED |
| LCLaidlaw Corporation | New Castle | — | ◇ UNVERIFIED |
| PFPerma - Flex Rollers (closed) | Newark | — | ◇ UNVERIFIED |
| STStandard Technologies & Machine CO | Wilmington | — | ◇ UNVERIFIED |
| AHA & H Metals INC | Newark | — | ◐ LIKELY ACTIVE |
| BIBrickner Industrial Ne INC | Claymont | — | ◐ LIKELY ACTIVE |
| NHNew Hudson Facades - DE | New Castle | 1–19 | ◐ LIKELY ACTIVE |
| PAPrecise Alignment Machine Tool CO. | Newark | — | ◐ LIKELY ACTIVE |
| ATAlly Tactical Solutions LLC | Bear | — | ◐ LIKELY ACTIVE |
| APApex Piping Systems, INC. | Wilmington | — | ◇ UNVERIFIED |
| ALAustiger LLC | Wilmington | — | ◇ UNVERIFIED |
| CMChurchmen's Machine Company | Wilmington | — | ◇ UNVERIFIED |
| CFConsolidated Fabrication and Construction, INC. | Wilmington | — | ◇ UNVERIFIED |
| CMContractors Materials LLC | New Castle | — | ◇ UNVERIFIED |
| DFDonald F. Deaven INC. | Wilmington | — | ◇ UNVERIFIED |
| DUDucts Unlimited INC. | Smyrna | — | ◇ UNVERIFIED |
| KSK & S Ironworks | Middletown | — | ◇ UNVERIFIED |
| KSK & S Ironworks INC. | Wilmington | — | ◇ UNVERIFIED |
| MIMetal-Tech, Inc. | New Castle | — | ◇ UNVERIFIED |
| MSMid-atlantic Steel, LLC | New Castle | — | ◇ UNVERIFIED |
| NEN.L.E. Enterprises Inc. | Newport | — | ◇ UNVERIFIED |
