 Craig Technologies INC | Seaford | 20–99 | ● ACTIVE |
 Polymer Technologies INC | Newark | 20–99 | ● ACTIVE |
 Rogers CORP | Bear | 100–499 | ● ACTIVE |
 Zacros America INC | Newark | 20–99 | ● ACTIVE |
 Atlantis Industries CORP | Georgetown | — | ● ACTIVE |
 Dupont Specialty Products Usa, LLC | Newark | — | ● ACTIVE |
 Franklin Fibre-lamitex CORP | Wilmington | — | ● ACTIVE |
 New Process Fibre CO | Greenwood | — | ● ACTIVE |
 Clayton Forge LLC | Middletown | — | ● ACTIVE |
 Cp Cases INC. | Frankford | — | ● ACTIVE |
| Ekc Advanced Electronics Usa, LLC | Wilmington | — | ● ACTIVE |
| ATAearo Technologies LLC | Newark | — | ◐ LIKELY ACTIVE |
| DTDelstar Technologies INC | Middletown | 100–499 | ◐ LIKELY ACTIVE |
| JTJustin Tanks, LLC | Georgetown | — | ◐ LIKELY ACTIVE |
| LRLiveo Research INC. | New Castle | 20–99 | ◐ LIKELY ACTIVE |
| LRLiveo Research INC. | Delaware City | — | ◐ LIKELY ACTIVE |
| DPDatwyler Pharma Packaging Usa, Inc./project Pacer | Middletown | — | ◐ LIKELY ACTIVE |
| CUCpi (aka Unisource Worldwide) | New Castle | — | ◇ UNVERIFIED |
| DBD & B Products / Multi-tech, INC | Georgetown | — | ◇ UNVERIFIED |
| DSDelaware Storage and Pipeline Company | Dover | — | ◇ UNVERIFIED |
| EMEmpower Materials | Newark | — | ◇ UNVERIFIED |
| FIFp International INC | Newark | — | ◇ UNVERIFIED |
| HCHardcore Composites | New Castle | — | ◇ UNVERIFIED |
| HHomalite | New Castle | — | ◇ UNVERIFIED |
| MWMarble Works INC | Greenwood | — | ◇ UNVERIFIED |
 Altium Packaging - Newark Plant | Newark | 20–99 | ◐ LIKELY ACTIVE |
| DSDatwyler Sealing Solutions | Middletown | 100–499 | ◐ LIKELY ACTIVE |
 Ensinger Inc. - Greenwood Operations | Greenwood | 20–99 | ◐ LIKELY ACTIVE |
| EHEssity Hydrofera LLC | Newark | 1–19 | ◐ LIKELY ACTIVE |
| NNewark | Newark | 20–99 | ◐ LIKELY ACTIVE |
| NDNewark, DE | Newark | 20–99 | ◐ LIKELY ACTIVE |
| DDover | Dover | — | ◇ UNVERIFIED |
| EIEnsinger Incorporated | Greenwood | — | ◇ UNVERIFIED |
| GPGraham Packaging Company | Newark | — | ◇ UNVERIFIED |
| HLHydrofera, LLC | Newark | — | ◇ UNVERIFIED |
| LCLetica Corporation | Middletown | — | ◇ UNVERIFIED |
| PIPacifico Industrial LTD. | Newark | — | ◇ UNVERIFIED |
| PPPeninsula Polymers INC. | Milford | — | ◇ UNVERIFIED |
| PIPlastic Industries,inc. | Newark | — | ◇ UNVERIFIED |
| QPQuantum Polymers Corporation | Newark | — | ◇ UNVERIFIED |
| RHRldp Holding Lp | Seaford | — | ◇ UNVERIFIED |
| RIRowe INC | Georgetown | — | ◇ UNVERIFIED |
| SFSpatz Fiberglass Products | New Castle | — | ◇ UNVERIFIED |
| WFWilmington Fibre Specialty Company, INC. | New Castle | — | ◇ UNVERIFIED |
