| MLMesser LLC | Tobyhanna | PA | Chemical Manufacturing325120 | — | ◇ UNVERIFIED |
| MSMomentive Specialty Chemicals INC Mt Jewett Facility | Mount Jewett | PA | Chemical Manufacturing325211 | — | ◇ UNVERIFIED |
| MCMontgomery Chem Ltd/conshohocken | Conshohocken | PA | Chemical Manufacturing325180 | — | ◇ UNVERIFIED |
| MSMountain Supply and Service | Williamsport | PA | Chemical Manufacturing325320 | — | ◇ UNVERIFIED |
| NANative American Environmental Technologies INC | Greentown | PA | Chemical Manufacturing325320 | — | ◇ UNVERIFIED |
| NSNatl Starch & Chem Co/hazleton | Hazleton | PA | Chemical Manufacturing325520 | — | ◇ UNVERIFIED |
| NINaturetech-solutions INC | Lancaster | PA | Chemical Manufacturing325320 | — | ◇ UNVERIFIED |
| NON O Bonsall & Sons | Millerstown | PA | Chemical Manufacturing325320 | — | ◇ UNVERIFIED |
| NCNuchem Corporation | Allentown | PA | Chemical Manufacturing325110 | — | ◇ UNVERIFIED |
| NLNull's Liquid Chlorine, LLC | New Oxford | PA | Chemical Manufacturing325320 | — | ◇ UNVERIFIED |
| OPOttawa Plt Food, INC | Carlisle | PA | Chemical Manufacturing325320 | — | ◇ UNVERIFIED |
| PAPace Analytical Life Sciences Norristown | Norristown | PA | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| PUPelgar USA Corporation | Saylorsburg | PA | Chemical Manufacturing325320 | — | ◇ UNVERIFIED |
| PPPenn Protective Coatings | Huntingdon Valley | PA | Chemical Manufacturing325510 | — | ◇ UNVERIFIED |
| PIPfizer Inc/w Conshohocken Plt | Conshohocken | PA | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| PMPharm Mfg Research Svc INC | Horsham | PA | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| PDPolyone Design Structures & Solutions Llc/donora Plt 1 | Donora | PA | Chemical Manufacturing325991 | — | ◇ UNVERIFIED |
| PIPpg Industries | Folcroft | PA | Chemical Manufacturing325613 | — | ◇ UNVERIFIED |
| PIPpg Industries INC | Springdale | PA | Chemical Manufacturing325211 | — | ◇ UNVERIFIED |
| PRPpg - Research & Development Facility | Allison Park | PA | Chemical Manufacturing325510 | — | ◇ UNVERIFIED |
| PMPrince Mfg Co/bowmanstown | Bowmanstown | PA | Chemical Manufacturing325131 | — | ◇ UNVERIFIED |
| PGPrinceton Global Synthesis LLC | Levittown | PA | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| PSProfrac Svcs LLC Smithfield Fac | Smithfield | PA | Chemical Manufacturing325199 | — | ◇ UNVERIFIED |
| PPPuritan Prod | Bethlehem | PA | Chemical Manufacturing325180 | — | ◇ UNVERIFIED |
| QMQuigley Mfg INC Pharmaloz Div | Lebanon | PA | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| RTRanbar Technology INC | Glenshaw | PA | Chemical Manufacturing325510 | — | ◇ UNVERIFIED |
| RIRaven Ind Inc/latrobe Ind Park | Latrobe | PA | Chemical Manufacturing325992 | — | ◇ UNVERIFIED |
| RURohmax USA | Horsham | PA | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| RCRose Clnr/duncansville | Duncansville | PA | Chemical Manufacturing325500 | — | ◇ UNVERIFIED |
| RORuetgers Organics Co/state College | State College | PA | Paper Manufacturing322120 | — | ◇ UNVERIFIED |
| SBSafc Biosciences | Sinking Spring | PA | Chemical Manufacturing325414 | — | ◇ UNVERIFIED |
| SCSensient Colors Inc/gibraltar | Birdsboro | PA | Chemical Manufacturing325100 | — | ◇ UNVERIFIED |
| SPSentry Paint Tech | Darby | PA | Chemical Manufacturing325510 | — | ◇ UNVERIFIED |
| SCSharp Clinical Services | Phoenixville | PA | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| SMSilberline Mfg Co/lansford Plt | Lansford | PA | Chemical Manufacturing325131 | — | ◇ UNVERIFIED |
| SOSmooth on | Easton | PA | Chemical Manufacturing325211 | — | ◇ UNVERIFIED |
| SUSolvay USA INC | Marcus Hook | PA | Chemical Manufacturing325613 | — | ◇ UNVERIFIED |
| SPSos Products, CO. | East Greenville | PA | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| SPSovereign Pkg Group Inc/east Pikeland | Phoenixville | PA | Chemical Manufacturing325510 | — | ◇ UNVERIFIED |
| STSpark Therapeutics INC. | Philadelphia | PA | Chemical Manufacturing325414 | — | ◇ UNVERIFIED |
| SPSpray Products | Upland | PA | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| SVSpring Valley Mulch | Dover | PA | Chemical Manufacturing325510 | — | ◇ UNVERIFIED |
| SHStandard Homeopathic Company | King of Prussia | PA | Chemical Manufacturing325411 | — | ◇ UNVERIFIED |
| SAStonehouse Acquisition CO Llc/chambersburg | Chambersburg | PA | Chemical Manufacturing325211 | — | ◇ UNVERIFIED |
| SCStoney Creek Technologies LLC | Marcus Hook | PA | Chemical Manufacturing325199 | — | ◇ UNVERIFIED |
| SPStrand Pool Supply, LLP | Bartonsville | PA | Chemical Manufacturing325320 | — | ◇ UNVERIFIED |
| SPSunoco Partners Mkt & Term Lp/hog Island | Tinicum | PA | Chemical Manufacturing325200 | — | ◇ UNVERIFIED |
| SPSunoco Partners M & T - Beaver Terminal | Vanport | PA | Chemical Manufacturing325211 | — | ◇ UNVERIFIED |
| SBSylvan Bioproducts, INC. | Kittanning | PA | Chemical Manufacturing325414 | — | ◇ UNVERIFIED |
| TBTetlp - Bechtelsville | Barto | PA | Chemical Manufacturing325910 | — | ◇ UNVERIFIED |
