| AIArkema Inc/west Chester | West Chester | PA | Chemical Manufacturing325199 | 20-99 | ● ACTIVE |
| BABorchers Americas | Franklin | PA | Chemical Manufacturing325110 | 20-99 | ● ACTIVE |
Chemcoat, INC | Montoursville | PA | Chemical Manufacturing325510 | 20-99 | ● ACTIVE |
Chemcut Holdings, LLC | State College | PA | Chemical Manufacturing325998 | 20-99 | ● ACTIVE |
| CCCoopers Creek Chemical CORP | West Conshohocken | PA | Chemical Manufacturing325110 | 20-99 | ● ACTIVE |
Copperhead Chemical Company INC. | Tamaqua | PA | Chemical Manufacturing325412 | 20-99 | ● ACTIVE |
| DNDe Nora Water Technologies LLC | Colmar | PA | Chemical Manufacturing325998 | 20-99 | ● ACTIVE |
Dynalene INC | Whitehall | PA | Chemical Manufacturing325998 | 20-99 | ● ACTIVE |
| ECEvonik Corp/chester | Chester | PA | Chemical Manufacturing325130 | 20-99 | ● ACTIVE |
| JLJ Lok | Cresson | PA | Chemical Manufacturing325991 | 20-99 | ● ACTIVE |
National Chemical Laboratories of Pa INC | Philadelphia | PA | Chemical Manufacturing325611 | 20-99 | ● ACTIVE |
| PIPalmer Intl INC | Skippack | PA | Chemical Manufacturing325211 | 20-99 | ● ACTIVE |
| PCPecora CORP | Harleysville | PA | Chemical Manufacturing325520 | 20-99 | ● ACTIVE |
Pleiger Plastic Company, Lllp | Washington | PA | Chemical Manufacturing325211 | 20-99 | ● ACTIVE |
Polytek Development CORP | Easton | PA | Chemical Manufacturing325211 | 20-99 | ● ACTIVE |
Sauereisen INC | Pittsburgh | PA | Chemical Manufacturing325510 | 20-99 | ● ACTIVE |
The Bullen Companies | Folcroft | PA | Chemical Manufacturing325611 | 20-99 | ● ACTIVE |
| AMAtlas Minerals & Chemicals INC | Mertztown | PA | Petroleum and Coal Products Manufacturing324122 | 20-99 | ● ACTIVE |
Cue INC | Cranberry Township | PA | Chemical Manufacturing325212 | 20-99 | ● ACTIVE |
Jackson Immunoresearch Laboratories, INC. | West Grove | PA | Chemical Manufacturing325414 | 20-99 | ● ACTIVE |
Klenzoid INC | Conshohocken | PA | Chemical Manufacturing325998 | 20-99 | ● ACTIVE |
| PGPennsylvania Grain Processing LLC | Clearfield | PA | Chemical Manufacturing325193 | 20-99 | ● ACTIVE |
| PFPrecision Finishing INC | Quakertown | PA | Chemical Manufacturing325611 | 20-99 | ● ACTIVE |
| AAApt Advanced Polymer Technology CORP. | Evans City | PA | Chemical Manufacturing325211 | 20-99 | ◐ LIKELY ACTIVE |
| CICork Industries INC. | Folcroft | PA | Chemical Manufacturing325510 | 20-99 | ◐ LIKELY ACTIVE |
| CRCorry Rubber | Corry | PA | Chemical Manufacturing325212 | 20-99 | ◐ LIKELY ACTIVE |
| GPGeon Performance Solutions | Croydon | PA | Chemical Manufacturing325991 | 20-99 | ◐ LIKELY ACTIVE |
| ARAvid Radiopharmaceuticals | Philadelphia | PA | Chemical Manufacturing325412 | 20-99 | ◐ LIKELY ACTIVE |
| ETEastern Technologies | Morgantown | PA | Chemical Manufacturing325998 | 20-99 | ◐ LIKELY ACTIVE |
| FLFedchem Llc/bethlehem | Bethlehem | PA | Chemical Manufacturing325199 | 20-99 | ◐ LIKELY ACTIVE |
| FOFunction of Beauty | Paxinos | PA | Chemical Manufacturing325620 | 20-99 | ◐ LIKELY ACTIVE |
| HCHenwil CORP | Newell | PA | Chemical Manufacturing325311 | 20-99 | ◐ LIKELY ACTIVE |
| PPPolymer Products CO INC | Stockertown | PA | Chemical Manufacturing325991 | 20-99 | ◐ LIKELY ACTIVE |
| WRW R Meadows of Pennsylvania | York | PA | Chemical Manufacturing325510 | 20-99 | ◐ LIKELY ACTIVE |
| ALAir Liquide Advanced Materials - PA2 | Mount Bethel | PA | Chemical Manufacturing325120 | 20-99 | ◐ LIKELY ACTIVE |
| APAir Products and Chemicals Inc.- Lancaster Facility | Lancaster | PA | Chemical Manufacturing325120 | 20-99 | ◐ LIKELY ACTIVE |
| ACAmerican Colloid Company - York PA | York | PA | Chemical Manufacturing325998 | 20-99 | ◐ LIKELY ACTIVE |
| AIArkema Inc. Birdsboro Plant | Birdsboro | PA | Chemical Manufacturing325211 | 20-99 | ◐ LIKELY ACTIVE |
| CNColorcon No Tox | Chalfont | PA | Chemical Manufacturing325910 | 20-99 | ◐ LIKELY ACTIVE |
| EPEfs Plastics | Hazle Township | PA | Chemical Manufacturing325991 | 20-99 | ◐ LIKELY ACTIVE |
| EIEisai Inc (215) | Exton | PA | Chemical Manufacturing325414 | 20-99 | ◐ LIKELY ACTIVE |
| EDEnzyme Development Corporation | Scranton | PA | Food Manufacturing311999 | 20-99 | ◐ LIKELY ACTIVE |
| FBFrontida BioPharm LLC. - Dungan | Philadelphia | PA | Chemical Manufacturing325411 | 20-99 | ◐ LIKELY ACTIVE |
| HGHammond Group INC | Pottstown | PA | Chemical Manufacturing325130 | 20-99 | ◐ LIKELY ACTIVE |
| KFKnf Flexpak Corporation | Tamaqua | PA | Chemical Manufacturing325211 | 20-99 | ◐ LIKELY ACTIVE |
| LELake Erie Biofuels LLC d/b/a Hero BX | Erie | PA | Chemical Manufacturing325199 | 20-99 | ◐ LIKELY ACTIVE |
| PCPMC Crystal | Lansdale | PA | Chemical Manufacturing325199 | 20-99 | ◐ LIKELY ACTIVE |
| PIPolyflo, INC. | Saint Clair | PA | Chemical Manufacturing325211 | 20-99 | ◐ LIKELY ACTIVE |
| QSQuotient Sciences GV | Garnet Valley | PA | Chemical Manufacturing325412 | 20-99 | ◐ LIKELY ACTIVE |
| RIReading Industries INC | Reading | PA | Paper Manufacturing322211 | 20-99 | ◐ LIKELY ACTIVE |