| RMReed Mfg/erie | Erie | PA | Primary Metal Manufacturing331511 | 20-99 | ◐ LIKELY ACTIVE |
| RMR M Palmer CO | West Reading | PA | Food Manufacturing311330 | 500+ | ◐ LIKELY ACTIVE |
| SHSchuylkill Haven Casket CO | Schuylkill Haven | PA | Miscellaneous Manufacturing339995 | 20-99 | ◐ LIKELY ACTIVE |
| SIServsteel Inc/morgan | Morgan | PA | Nonmetallic Mineral Product Manufacturing327120 | 1-19 | ◐ LIKELY ACTIVE |
| SCSilcotek Corporation | Bellefonte | PA | Fabricated Metal Product Manufacturing332812 | 20-99 | ◐ LIKELY ACTIVE |
| SMSnavely's Mill, INC. | Lititz | PA | Food Manufacturing311211 | 20-99 | ◐ LIKELY ACTIVE |
| SFSpecialty Fabrication & Powd Er Coating LLC | Franklin | PA | Fabricated Metal Product Manufacturing332322 | 100-499 | ◐ LIKELY ACTIVE |
| SSStandard Steel Specialty CO | Beaver Falls | PA | Fabricated Metal Product Manufacturing332323 | 20-99 | ◐ LIKELY ACTIVE |
| SMSteel Management Services | Nazareth | PA | Fabricated Metal Product Manufacturing332812 | 20-99 | ◐ LIKELY ACTIVE |
| SFStevens Feed Mill | Stevens | PA | Food Manufacturing311119 | 20-99 | ◐ LIKELY ACTIVE |
| SEStrauss Engineering CO | Huntingdon Valley | PA | Plastics and Rubber Products Manufacturing326199 | 20-99 | ◐ LIKELY ACTIVE |
| SIStrip It Clean Inc/york | York | PA | Fabricated Metal Product Manufacturing332812 | 1-19 | ◐ LIKELY ACTIVE |
| SSSweet Street Desserts | Reading | PA | Food Manufacturing311811 | 500+ | ◐ LIKELY ACTIVE |
| SISymmco INC | Sykesville | PA | Fabricated Metal Product Manufacturing332117 | 100-499 | ◐ LIKELY ACTIVE |
| TITaylor Ind Inc/parkerford | Parker Ford | PA | Plastics and Rubber Products Manufacturing326191 | 1-19 | ◐ LIKELY ACTIVE |
| TMThe Murus Company | Mansfield | PA | Wood Product Manufacturing321992 | 20-99 | ◐ LIKELY ACTIVE |
| TRThe Ritescreen Company LLC | Elizabethville | PA | Fabricated Metal Product Manufacturing332321 | 100-499 | ◐ LIKELY ACTIVE |
| TRThe Rock Kamps LLC | Coatesville | PA | Wood Product Manufacturing321920 | 100-499 | ◐ LIKELY ACTIVE |
| TCTri City Marble Llc/macungie Facility | Allentown | PA | Plastics and Rubber Products Manufacturing326191 | 1-19 | ◐ LIKELY ACTIVE |
| TMTroy Manufacturing, INC. | Hazleton | PA | Chemical Manufacturing325411 | 20-99 | ◐ LIKELY ACTIVE |
| UPUnited Plastics Machinery LLC | Exton | PA | Plastics and Rubber Products Manufacturing326199 | 1-19 | ◐ LIKELY ACTIVE |
| WMWagman Metal Products INC | York | PA | Fabricated Metal Product Manufacturing332999 | 20-99 | ◐ LIKELY ACTIVE |
| WDWaveline Direct LLC | Mechanicsburg | PA | Printing and Related Support Activities323111 | 1-19 | ◐ LIKELY ACTIVE |
| WOWhite Oak Ice Company | New Holland | PA | Beverage and Tobacco Product Manufacturing312113 | 20-99 | ◐ LIKELY ACTIVE |
| WIWinchester Industries INC | Saltsburg | PA | Plastics and Rubber Products Manufacturing326199 | 20-99 | ◐ LIKELY ACTIVE |
| 5G5 Generation Bakers - Bakery | Mc Kees Rocks | PA | Food Manufacturing311812 | 20-99 | ◐ LIKELY ACTIVE |
| AIAccellent Inc/collegeville Microcoax | Collegeville | PA | Primary Metal Manufacturing331210 | — | ◐ LIKELY ACTIVE |
| AAce | York | PA | Machinery Manufacturing333415 | 500+ | ◐ LIKELY ACTIVE |
| AKAdelphi Kitchens Inc/robesonia | Robesonia | PA | Furniture and Related Product Manufacturing337110 | 20-99 | ◐ LIKELY ACTIVE |
| ATAdler-Shorts Tool & MFG. Inc | Saegertown | PA | Fabricated Metal Product Manufacturing332710 | 1-19 | ◐ LIKELY ACTIVE |
| ATAdvanced Textile Corporation | Scranton | PA | Textile Mills313210 | 20-99 | ◐ LIKELY ACTIVE |
| AIAdvansix INC | Philadelphia | PA | Chemical Manufacturing325110 | — | ◐ LIKELY ACTIVE |
| AMA&E Manufacturing Company, Inc. | Levittown | PA | Fabricated Metal Product Manufacturing332322 | 20-99 | ◐ LIKELY ACTIVE |
| ACAgc Chem Amer Inc/thorndale | Downingtown | PA | Food Manufacturing311200 | — | ◐ LIKELY ACTIVE |
| AIAgr International, Inc. | Butler | PA | Computer and Electronic Product Manufacturing334519 | 100-499 | ◐ LIKELY ACTIVE |
| AHAgy - Huntingdon LLC | Huntingdon | PA | Nonmetallic Mineral Product Manufacturing327212 | 20-99 | ◐ LIKELY ACTIVE |
| APAir Prods & Chemicals INC - Specialty Gas Div | Tamaqua | PA | Chemical Manufacturing325120 | — | ◐ LIKELY ACTIVE |
| ANAkzo Nobel Coatings Inc/reading | Reading | PA | Chemical Manufacturing325510 | — | ◐ LIKELY ACTIVE |
| ACAlcoa Commercial Windows LLC (dba Traco) | Cranberry Township | PA | Primary Metal Manufacturing331318 | — | ◐ LIKELY ACTIVE |
| APAlcom Printing Group, Inc. | Harleysville | PA | Printing and Related Support Activities323111 | 100-499 | ◐ LIKELY ACTIVE |
| ACAllegheny Coatings | Ridgway | PA | Fabricated Metal Product Manufacturing332812 | 20-99 | ◐ LIKELY ACTIVE |
| ACAllegheny Coatings-boot Jack | Ridgway | PA | Fabricated Metal Product Manufacturing332812 | 20-99 | ◐ LIKELY ACTIVE |
| ALAllegheny Ludlum Latrobe Plant | Latrobe | PA | Primary Metal Manufacturing331110 | — | ◐ LIKELY ACTIVE |
| ALAllegheny Ludlum LLC | Brackenridge | PA | Primary Metal Manufacturing331110 | — | ◐ LIKELY ACTIVE |
| APAlleima Precision Tube LLC | Scottdale | PA | Primary Metal Manufacturing331210 | 20-99 | ◐ LIKELY ACTIVE |
Alli Fabrication LLC | Collingdale | PA | Fabricated Metal Product Manufacturing332322 | — | ◐ LIKELY ACTIVE |
| ASAlpha Scientific | Exton | PA | Miscellaneous Manufacturing339112 | — | ◐ LIKELY ACTIVE |
| ACAltasciences Cdmo Philadelphia | Harleysville | PA | Chemical Manufacturing325412 | — | ◐ LIKELY ACTIVE |
| ARAmerican Refining Group INC | Bradford | PA | Printing and Related Support Activities323110 | — | ◐ LIKELY ACTIVE |
| ASAmerican Sintered Technologies INC | Emporium | PA | Primary Metal Manufacturing331110 | — | ◐ LIKELY ACTIVE |