| UMUSA MD Baltimore Plant | Baltimore | MD | Chemical Manufacturing325510 | 100-499 | ◐ LIKELY ACTIVE |
| UMUSA MD Hagerstown Plant | Williamsport | MD | Chemical Manufacturing325211 | 20-99 | ◐ LIKELY ACTIVE |
| VTVibrantz Technologies Baltimore US86 | Baltimore | MD | Chemical Manufacturing325180 | 20-99 | ◐ LIKELY ACTIVE |
| WRWestbrook Rdc LLC | Waldorf | MD | Chemical Manufacturing325510 | — | ◐ LIKELY ACTIVE |
| WBWestminster Branch 32 | Westminster | MD | Chemical Manufacturing325120 | 1-19 | ◐ LIKELY ACTIVE |
| WGWR Grace & Co | Baltimore | MD | Chemical Manufacturing325180 | 100-499 | ◐ LIKELY ACTIVE |
| XHXerxes Hagerstown | Williamsport | MD | Chemical Manufacturing325211 | 20-99 | ◐ LIKELY ACTIVE |
| AHAlodia Healthy Hair LLC | Upper Marlboro | MD | Chemical Manufacturing325620 | — | ◇ UNVERIFIED |
| BDBetz Dearborn INC | Ellicott City | MD | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| BLBlk+grn, LLC | Upper Marlboro | MD | Chemical Manufacturing325620 | — | ◇ UNVERIFIED |
| BSBma Services LLC / Morgantown Plant | Newburg | MD | Petroleum and Coal Products Manufacturing324199 | — | ◇ UNVERIFIED |
| BABrass Artcrafts Company | Annapolis | MD | Chemical Manufacturing325612 | — | ◇ UNVERIFIED |
| CBCangene Biopharma, LLC | Rockville | MD | Chemical Manufacturing325414 | — | ◇ UNVERIFIED |
| CMCatalent Maryland Inc, - Gaithersburg | Gaithersburg | MD | Chemical Manufacturing325414 | — | ◇ UNVERIFIED |
| CNClay's Naturals Au Carre, LLC | Bowie | MD | Chemical Manufacturing325620 | — | ◇ UNVERIFIED |
| CACrave Away LLC | Baltimore | MD | Chemical Manufacturing325411 | — | ◇ UNVERIFIED |
| CMCurio Manufacturing, LLC | Cockeysville | MD | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| CLCytonix, LLC | Silver Spring | MD | Chemical Manufacturing325510 | — | ◇ UNVERIFIED |
| EIEtch, INC. | Baltimore City | MD | Chemical Manufacturing325120 | — | ◇ UNVERIFIED |
| HRH R Simon Company INC | Baltimore | MD | Chemical Manufacturing325992 | — | ◇ UNVERIFIED |
| IDImperial Dade | Jessup | MD | Chemical Manufacturing325612 | — | ◇ UNVERIFIED |
| ILInterbiome, LLC | Rockville | MD | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| LCLebanon Chemical CORP | Baltimore | MD | Chemical Manufacturing325314 | — | ◇ UNVERIFIED |
| LTLentigen Technology, INC. | Gaithersburg | MD | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| MPMcp Processing | Hagerstown | MD | Chemical Manufacturing325411 | — | ◇ UNVERIFIED |
| MSMiirant Station H | Dickerson | MD | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| MIMillennium Inorganic Chemicals INC Hawkins Point Plant | Baltimore | MD | Chemical Manufacturing325130 | — | ◇ UNVERIFIED |
| NINataur INC. | Baltimore | MD | Chemical Manufacturing325199 | — | ◇ UNVERIFIED |
| NPNeutron Prods INC | Dickerson | MD | Chemical Manufacturing325211 | — | ◇ UNVERIFIED |
| NINeximmune, INC | Gaithersburg | MD | Chemical Manufacturing325414 | — | ◇ UNVERIFIED |
| OLOld Line Environmental, INC. | Curtis Bay | MD | Chemical Manufacturing325312 | — | ◇ UNVERIFIED |
| PCPemco Corporation | Baltimore | MD | Chemical Manufacturing325199 | — | ◇ UNVERIFIED |
| PGPro Green Medical | Frederick | MD | Chemical Manufacturing325411 | — | ◇ UNVERIFIED |
| PLPyrodex LLC 672178 | Baltimore | MD | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| RIRegenxbio, INC | Rockville | MD | Chemical Manufacturing325414 | — | ◇ UNVERIFIED |
| SLSafesource LLC Ta Chemguard Products | Ijamsville | MD | Chemical Manufacturing325612 | — | ◇ UNVERIFIED |
| SSSimpson Strong-tie Company, INC. | Baltimore | MD | Chemical Manufacturing325510 | — | ◇ UNVERIFIED |
| SASmith and Nephew, INC | Columbia | MD | Chemical Manufacturing325414 | — | ◇ UNVERIFIED |
| SISunny In Denbigh LLC | Frederick | MD | Chemical Manufacturing325620 | — | ◇ UNVERIFIED |
| TLThe Lamotte Chemical Products Company | Chestertown | MD | Chemical Manufacturing325199 | — | ◇ UNVERIFIED |
The Plasticoid Co., INC. | Edgewood | MD | Chemical Manufacturing325212 | — | ◇ UNVERIFIED |
| TPTrulieve Processing | Hancock | MD | Chemical Manufacturing325411 | — | ◇ UNVERIFIED |
| UHUltraClean Hands, LLC | Burtonsville | MD | Chemical Manufacturing325611 | — | ◇ UNVERIFIED |
| UTUnited Therapeutics Ddomal Building | Silver Spring | MD | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| UOUniversity of Maryland Institute for Bioscience and Biotechnology Research | Rockville | MD | Chemical Manufacturing325414 | — | ◇ UNVERIFIED |
| VHVici Health Sciences LLC | Elkridge | MD | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| WRW. R. Grace & Co.-conn. | Baltimore | MD | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| WGW.r. Grace & CO. - Conn. | Baltimore | MD | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| ZTZebra Test Facility | Hyattsville | MD | Chemical Manufacturing325520 | — | ◇ UNVERIFIED |
| ZTZebra Test Facility | Hyattsville | MD | Chemical Manufacturing325520 | — | ◇ UNVERIFIED |