| OLOpen Loop Energy Dba Sjs Machine Shop | Farmington | NM | — | ◇ UNVERIFIED |
| OLOpen Loop Energy - Nichols Facility | Safford | AZ | — | ◇ UNVERIFIED |
| OCOptical Components | Covina | CA | — | ◇ UNVERIFIED |
| OCOrange County Metal Processing | Fullerton | CA | — | ◇ UNVERIFIED |
| OSOrange State Steel Construction, INC | Pinellas Park | FL | — | ◇ UNVERIFIED |
| OCOrbel CORP | Phillipsburg | NJ | — | ◇ UNVERIFIED |
| OOOrchid Orthopedics | Arcadia | CA | — | ◇ UNVERIFIED |
| OOOrchid Orthopedics Solutions | Santa Ana | CA | — | ◇ UNVERIFIED |
| OIOregon Iron Works Hidden Way | Vancouver | WA | — | ◇ UNVERIFIED |
| OIOregon Iron Works INC 3001 | Vancouver | WA | — | ◇ UNVERIFIED |
| OPOregon Plating Co., INC. | Portland | OR | — | ◇ UNVERIFIED |
| OMOrion Marine Construction, INC | Tampa | FL | — | ◇ UNVERIFIED |
| OMOrnamental Metalworks INC | Decatur | IL | — | ◇ UNVERIFIED |
| OPOshkosh Plating Technologies INC | Oshkosh | WI | — | ◇ UNVERIFIED |
| OTOtis Technology INC | Lyons Falls | NY | — | ◇ UNVERIFIED |
| OSOtten Screw Products Co-otten Screw Products CO | Saint Louis | MO | — | ◇ UNVERIFIED |
| OSOutland Steel, INC. | Caldwell | ID | — | ◇ UNVERIFIED |
| OGOwens-brockway Glass Containers INC | Godfrey | IL | — | ◇ UNVERIFIED |
| OPOwens Plating CO | Rainbow City | AL | — | ◇ UNVERIFIED |
| OMOxford Manufacturing, LLC | Selma | AL | — | ◇ UNVERIFIED |
| OPOxford Plating CO. INC. | Oxford | AL | — | ◇ UNVERIFIED |
| ODOzark Die Casting | Saint Clair | MO | — | ◇ UNVERIFIED |
| OSOzark Steel Fabricators INC | Farmington | MO | — | ◇ UNVERIFIED |
| OGO-z Gedney | Brooklyn | NY | — | ◇ UNVERIFIED |
| PSPabrico Steel Fabricators | Paterson | NJ | — | ◇ UNVERIFIED |
| PIPacal Industries LLC | La Crosse | WI | — | ◇ UNVERIFIED |
| PLPacal LLC | Roseville | MN | — | ◇ UNVERIFIED |
| PWPaccar Winch INC / Broken Arrow Winch Hoist Manufacturing | Broken Arrow | OK | — | ◇ UNVERIFIED |
| PCPacific Chrome Services | Santa Ana | CA | — | ◇ UNVERIFIED |
| PCPacific Coast Anodizing INC | Fresno | CA | — | ◇ UNVERIFIED |
| PIPacific Industrial Supply Director St | Seattle | WA | — | ◇ UNVERIFIED |
| PMPacific Metal Stampings INC | Valencia | CA | — | ◇ UNVERIFIED |
| PNPacific Northwest Plating | Vancouver | WA | — | ◇ UNVERIFIED |
| POPacific Office Automation | Seattle | WA | — | ◇ UNVERIFIED |
| PSPacific Steel Treating CO Incorporated | N Hollywood | CA | — | ◇ UNVERIFIED |
| POPaddock of California | Rock Hill | SC | — | ◇ UNVERIFIED |
| PMPadnos Manufacturing INC | Grand Rapids | MI | — | ◇ UNVERIFIED |
| PMPalfinger Marine USA INC | Portsmouth | VA | — | ◇ UNVERIFIED |
| PAPall Aeropower CORP Fort Myers | Fort Myers | FL | — | ◇ UNVERIFIED |
| PAPall Aerospace | Pinellas Park | FL | — | ◇ UNVERIFIED |
| PPPalmetto Plating Company | Easley | SC | — | ◇ UNVERIFIED |
| PWPalmyra Water Plant | Palmyra | MO | — | ◇ UNVERIFIED |
| PWPampa Wind Tower Manufacturing Facility | Pampa | TX | — | ◇ UNVERIFIED |
| PUPandrol USA LP | Bridgeport | NJ | — | ◇ UNVERIFIED |
| PPPapago Plating | Phoenix | AZ | — | ◇ UNVERIFIED |
| PMParagon Machine Company, INC. | Saint Petersburg | FL | — | ◇ UNVERIFIED |
| PGParamount Grinding Svc | Paramount | CA | — | ◇ UNVERIFIED |
| PHParker Hannifin - Airtek | Lancaster | NY | — | ◇ UNVERIFIED |
| PHParker Hannifin CORP | Reading | PA | — | ◇ UNVERIFIED |
| PHParker Hannifin CORP | Forest City | NC | — | ◇ UNVERIFIED |
| PHParker Hannifin CORP | Lithia Springs | GA | — | ◇ UNVERIFIED |
| PHParker Hannifin CORP Hpd | Marysville | OH | — | ◇ UNVERIFIED |
| PHParker Hannifin Integrated Hydraulics Division | Lincolnshire | IL | — | ◇ UNVERIFIED |
| PHParker Hannifin /mobile Systems | Elk Grove Village | IL | — | ◇ UNVERIFIED |
| PPParton & Preble INC | Warren | MI | — | ◇ UNVERIFIED |
| PFPasadena Fabrication Facility | Pasadena | TX | — | ◇ UNVERIFIED |
| PPPatchogue Plating Works INC | Patchogue | NY | — | ◇ UNVERIFIED |
| PJPaterson James M | Totowa | NJ | — | ◇ UNVERIFIED |
| PEPatrick Enterprises Corporation | Pembroke | VA | — | ◇ UNVERIFIED |
| PBPaul B Zimmerman INC | Lititz | PA | — | ◇ UNVERIFIED |
| PCPauls Chrome Plating | Evans City | PA | — | ◇ UNVERIFIED |
| PCPauls Chrome Plating/mars | Evans City | PA | — | ◇ UNVERIFIED |
| PEPayne Engineering & Fabrications | Canton | MA | — | ◇ UNVERIFIED |
| PMPca Metal Finishing Incorporated | Fullerton | CA | — | ◇ UNVERIFIED |
| PCPcc Composites | Frederick | CO | — | ◇ UNVERIFIED |
| PCPcc Composites.cn | Longmont | CO | — | ◇ UNVERIFIED |
| PPPcm Products INC | Titusville | FL | — | ◇ UNVERIFIED |
| PCP C Plating | Fenton | MO | — | ◇ UNVERIFIED |
| PQP&c Quality Turned Components | Smithfield | RI | — | ◇ UNVERIFIED |
| PPPdm Precast | Carlisle | IA | — | ◇ UNVERIFIED |
| PTPeacock Tool & Engineering | Spring Valley | CA | — | ◇ UNVERIFIED |
| PFPeak Finishing | Provo | UT | — | ◇ UNVERIFIED |
| PPPeak Plating.cn | Colorado Springs | CO | — | ◇ UNVERIFIED |
| PCPeddinghaus CORP of Sc | Andrews | SC | — | ◇ UNVERIFIED |
| PEPeerless Energy Systems | Omaha | NE | — | ◇ UNVERIFIED |
| PTPeerless Tube CO INC | Bloomfield | NJ | — | ◇ UNVERIFIED |
| PMPelican Metal Products LLC | Harrison Township | MI | — | ◇ UNVERIFIED |
| PKPelletizer Knives | Houston | TX | — | ◇ UNVERIFIED |
| PIPemco INC | Pascagoula | MS | — | ◇ UNVERIFIED |
| PTPems Tool & Machine INC | Little Falls | NY | — | ◇ UNVERIFIED |
 Penco Products INC | Hamilton | NC | — | ◇ UNVERIFIED |
| PUPenn United Tech INC | Cabot | PA | — | ◇ UNVERIFIED |
| PEPentair Electronic Packaging | Warwick | RI | — | ◇ UNVERIFIED |
| PPPenz Products, INC. | Mishawaka | IN | — | ◇ UNVERIFIED |
| PAPerfect Air Control LLC / Metal Industries LLC of Nc | Marion | NC | — | ◇ UNVERIFIED |
| PIPerfection Industrial Finishing | Tucson | AZ | — | ◇ UNVERIFIED |
| PIPerfection Industries INC | Terrell | TX | — | ◇ UNVERIFIED |
| PIPerfection Industries INC | Detroit | MI | — | ◇ UNVERIFIED |
| PPPerfection Plating, INC. (closed) | Nashville | TN | — | ◇ UNVERIFIED |
| PEPerformance Energy Services LLC - Amelia Yard | Morgan City | LA | — | ◇ UNVERIFIED |
| PPPerformance Plating & Polishing LLC | Olathe | KS | — | ◇ UNVERIFIED |
| PCPerkin-elmer CORP Applied Sci | Pomona | CA | — | ◇ UNVERIFIED |
| PMPerkins Machine CO | Warren | MA | — | ◇ UNVERIFIED |
| PFPetersen Finishing CORP | Schiller Park | IL | — | ◇ UNVERIFIED |
| PIPetersen INC | Pocatello | ID | — | ◇ UNVERIFIED |
| PCPetes Custom Metal Finishing | Phoenix | AZ | — | ◇ UNVERIFIED |
| PIPetroferm Incorporated | Franklin | KY | — | ◇ UNVERIFIED |
| PPPfi Precision New Carlisle Ohio | New Carlisle | OH | — | ◇ UNVERIFIED |
| PIPgi International | Houston | TX | — | ◇ UNVERIFIED |
| PMPhilipp Mfg CO INC | Easthampton | MA | — | ◇ UNVERIFIED |
