| APAcero Precision | West Chester | PA | Fabricated Metal Product Manufacturing332721 | 20-99 | ● ACTIVE |
Ace Wire Spring & Form CO INC | Mc Kees Rocks | PA | Fabricated Metal Product Manufacturing332613 | 20-99 | ● ACTIVE |
| AMAcme Machine & Welding Co., LLC | Punxsutawney | PA | Fabricated Metal Product Manufacturing332710 | 100-499 | ● ACTIVE |
A.c. Miller Concrete Products, INC | Spring City | PA | Nonmetallic Mineral Product Manufacturing327331 | — | ● ACTIVE |
Active Medical, INC. | Harrisburg | PA | Miscellaneous Manufacturing339113 | — | ● ACTIVE |
Active Protective Technologies INC | Conshohocken | PA | Miscellaneous Manufacturing339113 | — | ● ACTIVE |
Acton Technologies INC | Pittston | PA | Chemical Manufacturing325613 | — | ● ACTIVE |
Acutec Precision Aerospace, INC. | Meadville | PA | Fabricated Metal Product Manufacturing332721 | — | ● ACTIVE |
Acutronic USA INC. | Pittsburgh | PA | Computer and Electronic Product Manufacturing334511 | 20-99 | ● ACTIVE |
Advanced Computer and Network Corporation | Pittsburgh | PA | Computer and Electronic Product Manufacturing334112 | — | ● ACTIVE |
Advanced Cooling Technoglies INC | York | PA | Machinery Manufacturing333414 | 20-99 | ● ACTIVE |
Advanced Fabrication Services, INC. | Lemoyne | PA | Fabricated Metal Product Manufacturing332410 | — | ● ACTIVE |
Advanced Research Systems, INC. | Macungie | PA | Machinery Manufacturing333415 | — | ● ACTIVE |
Aerotech INC | Pittsburgh | PA | Electrical Equipment, Appliance & Component Manufacturing335314 | 100-499 | ● ACTIVE |
Aesculap, INC | Center Valley | PA | Miscellaneous Manufacturing339112 | — | ● ACTIVE |
Agustawestland Philadelphia Corporation | Philadelphia | PA | Transportation Equipment Manufacturing336411 | — | ● ACTIVE |
| ALAhf LLC Dba Ahf Products | Beech Creek | PA | Printing and Related Support Activities323111 | 1-19 | ● ACTIVE |
Airos Medical INC | Audubon | PA | Miscellaneous Manufacturing339113 | — | ● ACTIVE |
| ARAlcon Research LLC | Reading | PA | Fabricated Metal Product Manufacturing332312 | — | ● ACTIVE |
Allegheny Millwork Pbt | Lawrence | PA | Wood Product Manufacturing321918 | 100-499 | ● ACTIVE |
| APAllegheny Petroleum Products CO. | Wilmerding | PA | Petroleum and Coal Products Manufacturing324191 | 20-99 | ● ACTIVE |
Allegheny Tool Mold & Manufacturing, INC | Clarendon | PA | Fabricated Metal Product Manufacturing332710 | — | ● ACTIVE |
Allegheny Valve & Coupling, INC. | Warren | PA | Fabricated Metal Product Manufacturing332996 | 20-99 | ● ACTIVE |
| AOAllen Organ CO LLC | Macungie | PA | Computer and Electronic Product Manufacturing334418 | 100-499 | ● ACTIVE |
| AAAlpha Assembly Solutions, INC. | Altoona | PA | Primary Metal Manufacturing331491 | 100-499 | ● ACTIVE |
Alpine Packaging INC | North Versailles | PA | Printing and Related Support Activities323111 | 20-99 | ● ACTIVE |
Alston Machine Co., INC. | Pittsburgh | PA | Fabricated Metal Product Manufacturing332710 | — | ● ACTIVE |
| ALA & L Wood INC | Mount Pleasant Mills | PA | Wood Product Manufacturing321920 | 20-99 | ● ACTIVE |
Ambler Surgical, LLC | Exton | PA | Miscellaneous Manufacturing339112 | — | ● ACTIVE |
American Crane & Equipment CORP | Douglassville | PA | Machinery Manufacturing333923 | — | ● ACTIVE |
American High Performance Seals, INC | Oakdale | PA | Miscellaneous Manufacturing339991 | — | ● ACTIVE |
American Hollow Boring CO | Erie | PA | Fabricated Metal Product Manufacturing332111 | — | ● ACTIVE |
American Process Lettering, INC. | Primos | PA | Printing and Related Support Activities323113 | 100-499 | ● ACTIVE |
American Turned Products INC | Fairview | PA | Fabricated Metal Product Manufacturing332721 | — | ● ACTIVE |
| AIAmeridrives International LLC | Erie | PA | Primary Metal Manufacturing331221 | 100-499 | ● ACTIVE |
Amplifier Research CORP | Souderton | PA | Computer and Electronic Product Manufacturing334515 | 20-99 | ● ACTIVE |
Amz Manufacturing CORP | York | PA | Fabricated Metal Product Manufacturing332813 | — | ● ACTIVE |
Angstrom Sciences INC | Duquesne | PA | Machinery Manufacturing333242 | 1-19 | ● ACTIVE |
Apex North America INC | Donora | PA | Fabricated Metal Product Manufacturing332710 | 20-99 | ● ACTIVE |
Apogee Manufacturing Solutions Limited Liability Company | New Holland | PA | Fabricated Metal Product Manufacturing332710 | 1-19 | ● ACTIVE |
Applied Technology International LTD | Exton | PA | Miscellaneous Manufacturing339113 | — | ● ACTIVE |
Apx Enclosures INC | Greencastle | PA | Fabricated Metal Product Manufacturing332322 | 20-99 | ● ACTIVE |
Arbill Industries INC | Philadelphia | PA | Apparel Manufacturing315990 | — | ● ACTIVE |
| AIArcos Industries LLC | Mount Carmel | PA | Primary Metal Manufacturing331491 | 20-99 | ● ACTIVE |
| AMArdiem Medical INC | Indiana | PA | Computer and Electronic Product Manufacturing334510 | — | ● ACTIVE |
| AWArmstrong World Industries, INC. | Lancaster | PA | Wood Product Manufacturing321219 | — | ● ACTIVE |
Artisan Display, INC. | Red Hill | PA | Machinery Manufacturing333243 | — | ● ACTIVE |
Ashby Manufacturing CO INC | Cranberry Township | PA | Fabricated Metal Product Manufacturing332212 | — | ● ACTIVE |
Ash/tec, INC. | Hegins | PA | Fabricated Metal Product Manufacturing332710 | — | ● ACTIVE |
| AMAtlas Minerals & Chemicals INC | Mertztown | PA | Petroleum and Coal Products Manufacturing324122 | 20-99 | ● ACTIVE |