| ACAai Corporation | Cockeysville | MD | Fabricated Metal Product Manufacturing332994 | — | ◇ UNVERIFIED |
| ACAcdi (american Computer Development) | Frederick | MD | Computer and Electronic Product Manufacturing334111 | — | ◇ UNVERIFIED |
| AFAllen Family Foods | Hurlock | MD | Food Manufacturing311615 | — | ◇ UNVERIFIED |
| AWAtlantic Wood Industries | Salisbury | MD | Wood Product Manufacturing321114 | — | ◇ UNVERIFIED |
| BDBlack & Decker | Hampstead | MD | Fabricated Metal Product Manufacturing332510 | — | ◇ UNVERIFIED |
| BABonsal American INC | White Marsh | MD | Petroleum and Coal Products Manufacturing324122 | — | ◇ UNVERIFIED |
| CQCapital Quickrete | Clinton | MD | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| COChesapeake Optical Lab | Baltimore | MD | Miscellaneous Manufacturing339115 | — | ◇ UNVERIFIED |
| CBClendenin Brothers | Baltimore | MD | Primary Metal Manufacturing331319 | — | ◇ UNVERIFIED |
 Colonial Metals INC - Triumph Industrial Park Bldg 20 | Elkton | MD | Chemical Manufacturing325131 | — | ◇ UNVERIFIED |
| CPConcrete Pipe & Products | Jessup | MD | Nonmetallic Mineral Product Manufacturing327332 | — | ◇ UNVERIFIED |
| DGDaniel G. Schuster, INC. - Frederick Plant | Frederick | MD | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| EAEastalco Aluminum Company | Baltimore | MD | Primary Metal Manufacturing331312 | — | ◇ UNVERIFIED |
| EIEvapco Inc-taneytown | Taneytown | MD | Machinery Manufacturing333415 | — | ◇ UNVERIFIED |
| GMGaf Materials Corporation | Highlandtown | MD | Petroleum and Coal Products Manufacturing324122 | — | ◇ UNVERIFIED |
| HSHarford Systems | Aberdeen | MD | Fabricated Metal Product Manufacturing332322 | — | ◇ UNVERIFIED |
| HFHurlock Feed Mill/hatchery | Hurlock | MD | Food Manufacturing311119 | — | ◇ UNVERIFIED |
| MPMccormick Paint Works CO | Frederick | MD | Chemical Manufacturing325510 | — | ◇ UNVERIFIED |
| MPMd Precision Spring | Essex | MD | Fabricated Metal Product Manufacturing332611 | — | ◇ UNVERIFIED |
| MVMd Va Marva Maid Landover, LLC | Landover | MD | Food Manufacturing311511 | — | ◇ UNVERIFIED |
| MFMountaire Farms INC Princess Anne Feed Mill | Westover | MD | Food Manufacturing311119 | — | ◇ UNVERIFIED |
| NDNew Dawn Manufacturing CO | Upper Marlboro | MD | Chemical Manufacturing325611 | — | ◇ UNVERIFIED |
| NCNoxell CORP | Hunt Valley | MD | Chemical Manufacturing325620 | — | ◇ UNVERIFIED |
| PFPerdue Foods, Llc, Salisbury Processing Plant | Salisbury | MD | Food Manufacturing311119 | — | ◇ UNVERIFIED |
| PFPerkinelmer Fluid Sciences | Beltsville | MD | Fabricated Metal Product Manufacturing332912 | — | ◇ UNVERIFIED |
| PBPike Baltimore Terminals LLC - Baltimore Terminal | Baltimore | MD | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| PCPoly-seal CORP | Baltimore | MD | Plastics and Rubber Products Manufacturing326199 | — | ◇ UNVERIFIED |
| PMPrecoat Metals Division of Sequa Corporation | Elkridge | MD | Fabricated Metal Product Manufacturing332812 | — | ◇ UNVERIFIED |
 Purina Animal Nutrition | Hagerstown | MD | Food Manufacturing311119 | — | ◇ UNVERIFIED |
| SCSchuster Concrete Ready Mix, LLC | Owings Mills | MD | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| SGS & G Concrete Company, Llc- Grantley Ave. Plant | Baltimore | MD | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| VIValpac, INC | Federalsburg | MD | Chemical Manufacturing325520 | — | ◇ UNVERIFIED |
| WMWard Machinery Company | Cockeysville | MD | Machinery Manufacturing333243 | — | ◇ UNVERIFIED |
| WLW L Gore & Associates INC | Elkton | MD | Textile Mills313230 | — | ◇ UNVERIFIED |
| FIFluoron, INC | Elkton | MD | Plastics and Rubber Products Manufacturing326121 | — | ◇ UNVERIFIED |
| PPPacemaker Press | Frederick | MD | Printing and Related Support Activities323110 | — | ◇ UNVERIFIED |
| ADAbbey Drum CO | Baltimore | MD | Fabricated Metal Product Manufacturing332911 | — | ◇ UNVERIFIED |
| AAbiomed | Baltimore City | MD | Computer and Electronic Product Manufacturing334510 | — | ◇ UNVERIFIED |
| APAce Plating LLC | Joppa | MD | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| ABAdvanced Bioscience Laboratories, INC | Rockville | MD | Chemical Manufacturing325414 | — | ◇ UNVERIFIED |
| ADAdvanced Design Products | Finksburg | MD | Machinery Manufacturing333924 | — | ◇ UNVERIFIED |
| ATAdvanced Thermal Batteries, INC | Westminster | MD | Electrical Equipment, Appliance & Component Manufacturing335910 | — | ◇ UNVERIFIED |
| AVAdvanced Vacuum Company | Westminster | MD | Machinery Manufacturing333912 | — | ◇ UNVERIFIED |
| AIAdvertising INC (graphic) | Hagerstown | MD | Printing and Related Support Activities323113 | — | ◇ UNVERIFIED |
| ALAerosol Liquid Packaging | Baltimore | MD | Chemical Manufacturing325611 | — | ◇ UNVERIFIED |
| AIAggregate Industries - Acton Lane Plant | Waldorf | MD | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| AIAggregate Industries - Bladen | Hyattsville | MD | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| AIAggregate Industries - Severn Asphalt | Severn | MD | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| AUAirgas Usa, LLC | Hyattsville | MD | Chemical Manufacturing325120 | — | ◇ UNVERIFIED |
| ACAirpax CORP. | Cambridge | MD | Computer and Electronic Product Manufacturing334000 | — | ◇ UNVERIFIED |
