| PSPlastic Supply of Pennsylvania, Inc. | Royersford | — | ◇ UNVERIFIED |
| PIPolycycle Industrial Products, INC. | Pittsburgh | — | ◇ UNVERIFIED |
| PCPolymer Contours, INC. | Allentown | — | ◇ UNVERIFIED |
| PIPolymer Industrial Products CO. LLC. Division of Nytef Plastics LTD. | Bensalem | — | ◇ UNVERIFIED |
| PTPomp's Tire Service, INC. | Bedford | — | ◇ UNVERIFIED |
| PEPort Erie Plastics Building Addition | Harborcreek, Township of | — | ◇ UNVERIFIED |
| PPPrecise Plastic Products, INC. | Fairview | — | ◇ UNVERIFIED |
| PPPresto Products Company | Tamaqua | — | ◇ UNVERIFIED |
| PPPretium Packaging, LLC | Hazleton | — | ◇ UNVERIFIED |
| PPPrime Plastics, INC. | Washington | — | ◇ UNVERIFIED |
| PPPrism Plastics INC. | Meadville | — | ◇ UNVERIFIED |
| PPProject Pangea | Penn, Township of | — | ◇ UNVERIFIED |
| PTProtofab Technologies L.L.C. | Valley View | — | ◇ UNVERIFIED |
| QEQuadrant Engineering Plastic Products | Scranton | — | ◇ UNVERIFIED |
| QEQuadrant Epp USA | Scranton | — | ◇ UNVERIFIED |
| RSRail - Side Siding | Hazle, Township of | — | ◇ UNVERIFIED |
| RPRegency Plus, INC | Mount Carmel | — | ◇ UNVERIFIED |
| RMReliant Molding, INC. | Cranesville | — | ◇ UNVERIFIED |
| RCRexam Consumer Plastics, INC. | Pittsburgh | — | ◇ UNVERIFIED |
| RPR-g-t Plastics Company | Linesville | — | ◇ UNVERIFIED |
| RHRhkg Holdings, INC. | Meadville | — | ◇ UNVERIFIED |
| RIRjf International Corporation | Muncy | — | ◇ UNVERIFIED |
| RWRoyal Window and Door Profiles Plant 13 INC. | Delmont | — | ◇ UNVERIFIED |
| RMRynone Manufacturing CORP | Sayre | — | ◇ UNVERIFIED |
| RMRynone Mfg Corp/sayre Plt | Sayre | — | ◇ UNVERIFIED |
| SISchweitzer-mauduit International, INC. | Richland | — | ◇ UNVERIFIED |
| SPScranton Products, INC. | Scranton | — | ◇ UNVERIFIED |
| SDScrub Daddy/folcroft Boro | Folcroft | — | ◇ UNVERIFIED |
| SBShingle Belting Inc/upper Merion Twp | King of Prussia | — | ◇ UNVERIFIED |
| SVShop Vac CORP. | Canton | — | ◇ UNVERIFIED |
| SISilgan Ipec | New Castle | — | ◇ UNVERIFIED |
| SPSilgan Plastics Corporation | Langhorne | — | ◇ UNVERIFIED |
| SASimona America Incorporated | Hazleton | — | ◇ UNVERIFIED |
| SWSlocomb Windows and Doors INC | Wilkes Barre | — | ◇ UNVERIFIED |
| SWSlocomb Windows and Doors, INC. | Hanover Township | — | ◇ UNVERIFIED |
| SWSlocomb Windows and Doors, Incorporated | Wilkes Barre | — | ◇ UNVERIFIED |
| SSSmart Systems Enterprises, Inc. | Pittsburgh | — | ◇ UNVERIFIED |
| SLSpadone, LLC | Willow Grove | — | ◇ UNVERIFIED |
| SCSteel City Acquisition Corp. | Easton | — | ◇ UNVERIFIED |
| STSterling Technologies, INC. | Lake City | — | ◇ UNVERIFIED |
| SSSteve Shannon Tire | Bloomsburg, Town of | — | ◇ UNVERIFIED |
| SSSun Star, Incorporated | Latrobe | — | ◇ UNVERIFIED |
| TPTechna Plastics, LLC | Lehighton | — | ◇ UNVERIFIED |
| TTTech Tank LLC | Erie | — | ◇ UNVERIFIED |
| TRThe Rodon Group/hatfield | Hatfield | — | ◇ UNVERIFIED |
| TPT.k. Plastics Company | Gibsonia | — | ◇ UNVERIFIED |
| TLTmi, LLC | Pittsburgh | — | ◇ UNVERIFIED |
| TATmp Acquisitions CO INC | Hyde | — | ◇ UNVERIFIED |
| THTranscontinental Hs Crocker INC | Exton | — | ◇ UNVERIFIED |
| TFTredegar Film Products | Pottsville | — | ◇ UNVERIFIED |
