| FIFujifilm Imaging Colorants | New Castle | 20–99 | ◐ LIKELY ACTIVE |
| FIFujifilm Imaging Colorants Inc. | New Castle | 20–99 | ◐ LIKELY ACTIVE |
| ISICP Seaford | Seaford | 20–99 | ◐ LIKELY ACTIVE |
| INInternational N&H USA, Inc. | Newark | 100–499 | ◐ LIKELY ACTIVE |
| IIIntervet, Inc. Delaware Avenue | Millsboro | 20–99 | ◐ LIKELY ACTIVE |
| IPInvista Performance Materials, LLC - Seaford | Seaford | 100–499 | ◐ LIKELY ACTIVE |
| LLaMotte | Newark | 20–99 | ◐ LIKELY ACTIVE |
| MCMid-atlantic Clean Hydrogen Hub, INC. | Dover | — | ◐ LIKELY ACTIVE |
| MSMillsboro- State Street | Millsboro | 100–499 | ◐ LIKELY ACTIVE |
| NSNewark Site | Newark | 500+ | ◐ LIKELY ACTIVE |
| NHNexpera Headquarters | Newark | 20–99 | ◐ LIKELY ACTIVE |
| NRNexpera - Red Lion | New Castle | 20–99 | ◐ LIKELY ACTIVE |
| SASatys Aftermarket Delaware LLC | New Castle | — | ◐ LIKELY ACTIVE |
| SNSDIX - Newark | Newark | 20–99 | ◐ LIKELY ACTIVE |
| TCThe Chemours CO Fc LLC | Wilmington | — | ◐ LIKELY ACTIVE |
| WAWilmington Aquarius plant | Wilmington | 20–99 | ◐ LIKELY ACTIVE |
| LGLumos Group, LLC | Middletown | — | ◐ LIKELY ACTIVE |
| FSFlow Smart, INC. | Seaford | — | ◇ UNVERIFIED |
| ACAmspec Chemical Corporation | Bear | — | ◇ UNVERIFIED |
| BLBurris Logistics | Harrington | — | ◇ UNVERIFIED |
| DUDanisco USA INC. - Newark | Newark | — | ◇ UNVERIFIED |
| DEDelrin Experimental Station | Wilmington | — | ◇ UNVERIFIED |
| EIE. I. Du Pont De Nemours and Company (dupont) | Delaware City | — | ◇ UNVERIFIED |
| FIFfi Ionix | Dover | — | ◇ UNVERIFIED |
| FPFormosa Plastics Corporation | Delaware City | — | ◇ UNVERIFIED |
| FSFrontier Scientifc Services, INC. | Newark | — | ◇ UNVERIFIED |
| GFGrowmark Fs, LLC. | Milford | — | ◇ UNVERIFIED |
| IMInternational Market Suppliers, INC. | Bear | — | ◇ UNVERIFIED |
| KCKuehne Chemical Co., INC. - Delaware City | Delaware City | — | ◇ UNVERIFIED |
| LCLebanon Chemical CORP | Milford | — | ◇ UNVERIFIED |
| LILinde INC. | Delaware City | — | ◇ UNVERIFIED |
| MHMarcus Hook Termnial | Claymont | — | ◇ UNVERIFIED |
| NLNuzelmeyer LLC | Bear | — | ◇ UNVERIFIED |
| PTPenske Truck Leasing CO LP | New Castle | — | ◇ UNVERIFIED |
| P6Phillips 66 Caustic Scrubber Material | New Castle | — | ◇ UNVERIFIED |
| PDPolyguard Division of Dyk Automotive, LLC | Wilmington | — | ◇ UNVERIFIED |
| PIPpg Industries, INC. | Dover | — | ◇ UNVERIFIED |
| RPRoyale Pigments and Chemicals Inc | Seaford | — | ◇ UNVERIFIED |
 Siemens Healthcare Diagnostics, INC. | Newark | — | ◇ UNVERIFIED |
| SCSyntec CORP | New Castle | — | ◇ UNVERIFIED |
| TPTechmer Pm | New Castle | — | ◇ UNVERIFIED |
| VIVeltec INC | Newark | — | ◇ UNVERIFIED |
| VFVersogen - Fmc - S115 | Newark | — | ◇ UNVERIFIED |
