| 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 |
| PGProcter & Gamble Mfg/hatboro | Hatboro | PA | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| PSProfrac Svcs LLC Smithfield Fac | Smithfield | PA | Chemical Manufacturing325199 | — | ◇ UNVERIFIED |
| PSPruett Schaffer Chem Co/pgh | Pittsburgh | PA | Chemical Manufacturing325510 | — | ◇ 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 |
| RPRhone Poulenc Incorporated | Philadelphia | PA | Chemical Manufacturing325998 | — | ◇ 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 |
| SISabic Innovative Plastics/thorndale | Thorndale | PA | Chemical Manufacturing325991 | — | ◇ UNVERIFIED |
| SBSafc Biosciences | Sinking Spring | PA | Chemical Manufacturing325414 | — | ◇ UNVERIFIED |
| SNSchutz NA LLC | Philadelphia | PA | Chemical Manufacturing325510 | — | ◇ 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 |
| SKSmith Kline Beecham Pharmaceuticals | Philadelphia | PA | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| SCSmittys Clean Scene Paxton St Clnr | Harrisburg | PA | Chemical Manufacturing325410 | — | ◇ 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 |
| SCSpecialty Chemical Systems, INC | Pottstown | PA | Chemical Manufacturing325180 | — | ◇ 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 Bernville Compressor Station | Robesonia | PA | Chemical Manufacturing325991 | — | ◇ UNVERIFIED |
| TMTetlp Mlv Ln 12 Mp 197.15 Blue Marsh West | Robesonia | PA | Chemical Manufacturing325620 | — | ◇ UNVERIFIED |
| TMTetlp Mlv Ln 12 Mp 199.23 Blue Marsh East | Bernville | PA | Chemical Manufacturing325920 | — | ◇ UNVERIFIED |
| TETherm-o-rock East INC | Donora | PA | Chemical Manufacturing325180 | — | ◇ UNVERIFIED |
| TLTroy Laundry & Dry Clnr/carlisle | Carlisle | PA | Chemical Manufacturing325413 | — | ◇ UNVERIFIED |
| TMTroy Manufacturing, INC. | Hazleton | PA | Chemical Manufacturing325411 | — | ◇ UNVERIFIED |
| UAUpmc Altoona/7th Avenue Campus Former Bon Secours | Altoona | PA | Chemical Manufacturing325320 | — | ◇ UNVERIFIED |
| VFVanguard / Frazer | Frazer | PA | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| VHVertellus Health & Specialty Products LLC | Delaware Water Gap | PA | Chemical Manufacturing325199 | — | ◇ UNVERIFIED |
