| PLPacific Lead Products INC | Vista | — | ◇ UNVERIFIED |
| PSPacific Steel Casting Co-plant | Berkeley | — | ◇ UNVERIFIED |
| PSPacific Steel Casting Co-plant #1 | Berkeley | — | ◇ UNVERIFIED |
| PSPacific Steel Casting Co-plant #3 | Berkeley | — | ◇ UNVERIFIED |
| PSPacific Steel Group | Bloomington | — | ◇ UNVERIFIED |
| PCParamit Corporation | Morgan Hill | — | ◇ UNVERIFIED |
| PEParamount Extrusions CO. | Paramount | — | ◇ UNVERIFIED |
| PRParamount Roll & Forming, INC. | Adelanto | — | ◇ UNVERIFIED |
| PMPaul Matsumoto | Rio Linda | — | ◇ UNVERIFIED |
| PSPciw Steel CORP | San Diego | — | ◇ UNVERIFIED |
| PAPerformance Aluminum Products | Ontario | — | ◇ UNVERIFIED |
| PMPerformance Machine LLC | Cerritos | — | ◇ UNVERIFIED |
| PSPerimeter Solutions LP | Mcclellan | — | ◇ UNVERIFIED |
| PIPhibro-tech, INC. | Buttonwillow | — | ◇ UNVERIFIED |
| PAPhysician's Automated Laboratory Dba Central Coast Pathology Laborator | San Luis Obispo | — | ◇ UNVERIFIED |
| PSPmb Supply and Mfg INC | Chico | — | ◇ UNVERIFIED |
| PMPmw Manufacturing | Industry | — | ◇ UNVERIFIED |
| PEPowerhouse Entertainment LLC | North Hollywood | — | ◇ UNVERIFIED |
| PCPrecision Cast Products | Oakland | — | ◇ UNVERIFIED |
 Precision Founders, INC. Dba Pcc Structurals San Leandro | San Leandro | — | ◇ UNVERIFIED |
| PGPrimordial Genetics INC | San Diego | — | ◇ UNVERIFIED |
| PRProfessional Refinishing Org | La Puente | — | ◇ UNVERIFIED |
| PSProminent Systems INC | City of Industry | — | ◇ UNVERIFIED |
| PDProtech Design | Anaheim | — | ◇ UNVERIFIED |
| PWPutzmeister West INC | Santa Fe Spgs | — | ◇ UNVERIFIED |
| QAQuailty Automotive | Westminster | — | ◇ UNVERIFIED |
 Quality Aluminum Forge INC | Long Beach | — | ◇ UNVERIFIED |
| QFQuantum Fuel Systems Technologies INC | Lake Forest | — | ◇ UNVERIFIED |
| QIQuemetco INC | City of Industry | — | ◇ UNVERIFIED |
| QQQuick Quack Car Wash Coe | Roseville | — | ◇ UNVERIFIED |
| RFRain for Rent INC | Woodland | — | ◇ UNVERIFIED |
| RORamcast Ornamental Supply CO INC | Fresno | — | ◇ UNVERIFIED |
| RFRamirez Foundry | El Cajon | — | ◇ UNVERIFIED |
| RDRangers Die Casting CO | Lynwood | — | ◇ UNVERIFIED |
| RIRasirc INC | San Diego | — | ◇ UNVERIFIED |
| RHRaymond Handling | Santa Fe Springs | — | ◇ UNVERIFIED |
| RSRecycling Services Alliance, I | Fremont | — | ◇ UNVERIFIED |
| RMReed Manufacturing INC Dba American Casting CO | Hollister | — | ◇ UNVERIFIED |
| RSRegional Steel CORP | Fontana | — | ◇ UNVERIFIED |
| RSRelativity Space INC | Inglenook | — | ◇ UNVERIFIED |
| RSReliable Steel Building Products INC | South Gate | — | ◇ UNVERIFIED |
| RSRenco Systems INC | Banning | — | ◇ UNVERIFIED |
| RTRennsteig Tools INC | Camarillo | — | ◇ UNVERIFIED |
| RTResideo Technologies INC | San Diego | — | ◇ UNVERIFIED |
| REReuland Electric CO | Industry | — | ◇ UNVERIFIED |
| RMRichard Macdonald Studios INC. | Monterey | — | ◇ UNVERIFIED |
| RFRidge Foundry INC | San Leandro | — | ◇ UNVERIFIED |
| RIR&k Industrial Products INC | Richmond | — | ◇ UNVERIFIED |
| RMRoto Metals, INC | San Francisco | — | ◇ UNVERIFIED |
| RSRoy S. Waisman | Palmdale | — | ◇ UNVERIFIED |
