| PCParker-hannifin Corporation | San Diego | CA | Machinery Manufacturing333517 | — | ◐ LIKELY ACTIVE |
| PCPeacock Cellars INC. | Arroyo Grande | CA | Machinery Manufacturing333618 | — | ◐ LIKELY ACTIVE |
| PIPeco Inspx | Modesto | CA | Machinery Manufacturing333241 | 20-99 | ◐ LIKELY ACTIVE |
| PMPF Metals | Turlock | CA | Fabricated Metal Product Manufacturing332313 | 20-99 | ◐ LIKELY ACTIVE |
| PRPoly Riser & Pipe, LLC | Willows | CA | Machinery Manufacturing333111 | 1-19 | ◐ LIKELY ACTIVE |
| PIPorifera, INC. | San Leandro | CA | Machinery Manufacturing333241 | — | ◐ LIKELY ACTIVE |
| PCPsg California LLC | Grand Terrace | CA | Machinery Manufacturing333914 | — | ◐ LIKELY ACTIVE |
| PWPure Wafer INC | San Jose | CA | Machinery Manufacturing333295 | 100-499 | ◐ LIKELY ACTIVE |
| PAPvp Advanced Eo Systems, INC. | Lake Forest | CA | Machinery Manufacturing333310 | — | ◐ LIKELY ACTIVE |
| QTQuality Thermal Applications, INC. | Anaheim | CA | Fabricated Metal Product Manufacturing332710 | — | ◐ LIKELY ACTIVE |
| QMQuanta Manufacturing Fremont Building 5 | Fremont | CA | Machinery Manufacturing333310 | 500+ | ◐ LIKELY ACTIVE |
| RIRasirc INC | San Diego | CA | Primary Metal Manufacturing331313 | 20-99 | ◐ LIKELY ACTIVE |
| RIRasirc INC | San Diego | CA | Primary Metal Manufacturing331313 | 20-99 | ◐ LIKELY ACTIVE |
| RIRc Industries, INC | Canoga Park | CA | Fabricated Metal Product Manufacturing332721 | — | ◐ LIKELY ACTIVE |
| RMRepublic Machinery CO INC | Harbor City | CA | Machinery Manufacturing333515 | 1-19 | ◐ LIKELY ACTIVE |
| RRRepublic Refrigeration, INC. | Fresno | CA | Machinery Manufacturing333415 | — | ◐ LIKELY ACTIVE |
Retech Systems LLC - Ukiah | Ukiah | CA | Machinery Manufacturing333911 | 1-19 | ◐ LIKELY ACTIVE |
| RPRH Peterson | City of Industry | CA | Machinery Manufacturing333414 | 100-499 | ◐ LIKELY ACTIVE |
| RIRimnetics, INC | Loomis | CA | Plastics and Rubber Products Manufacturing326199 | 20-99 | ◐ LIKELY ACTIVE |
| SSaf-t-cab | Fresno | CA | Machinery Manufacturing333120 | 20-99 | ◐ LIKELY ACTIVE |
| SCScfm Corporation | Anaheim | CA | Machinery Manufacturing333413 | — | ◐ LIKELY ACTIVE |
| SPSerpa Packaging Solutions | Visalia | CA | Machinery Manufacturing333993 | 100-499 | ◐ LIKELY ACTIVE |
| SOSimplify Optics LLC | Valencia | CA | Machinery Manufacturing333314 | — | ◐ LIKELY ACTIVE |
| SISimpro International LLC | Irvine | CA | Machinery Manufacturing333914 | — | ◐ LIKELY ACTIVE |
| SMSmith Machine and Tool LLC | Huntington Beach | CA | Machinery Manufacturing333514 | — | ▲ REPORTED CLOSED |
| SPSonoma Photonics, INC | Santa Rosa | CA | Machinery Manufacturing333310 | — | ▲ REPORTED CLOSED |
| SStockton | Stockton | CA | Petroleum and Coal Products Manufacturing324122 | 20-99 | ◐ LIKELY ACTIVE |
| SISunearth, INC. | Fontana | CA | Machinery Manufacturing333414 | — | ◐ LIKELY ACTIVE |
| TLTechni-cast LLC | South Gate | CA | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
| TFT & F Sheet Metals Fab and Machining, INC | Gardena | CA | Fabricated Metal Product Manufacturing332710 | — | ◐ LIKELY ACTIVE |
| TIThe Irvine Company | Irvine | CA | Printing and Related Support Activities323111 | 1-19 | ◐ LIKELY ACTIVE |
| TTThe Torrance | Torrance | CA | Printing and Related Support Activities323111 | 1-19 | ◐ LIKELY ACTIVE |
| TBTriad Bellows | Anaheim | CA | Fabricated Metal Product Manufacturing332112 | 20-99 | ◐ LIKELY ACTIVE |
| UEUpwing Energy - Cerritos HQ | Cerritos | CA | Machinery Manufacturing333132 | 20-99 | ◐ LIKELY ACTIVE |
Vanguard Electronics | Huntington Beach | CA | Machinery Manufacturing333292 | 20-99 | ◐ LIKELY ACTIVE |
| VVVenteux Vineyards | Templeton | CA | Machinery Manufacturing333618 | — | ◐ LIKELY ACTIVE |
Votaw Precision Technologies INC | Santa Fe Springs | CA | Machinery Manufacturing333514 | 100-499 | ◐ LIKELY ACTIVE |
| WLWesanco LLC | Garden Grove | CA | Fabricated Metal Product Manufacturing332312 | 20-99 | ◐ LIKELY ACTIVE |
| WPWestern Power Products, Inc. - Bakersfield | Bakersfield | CA | Machinery Manufacturing333618 | 20-99 | ◐ LIKELY ACTIVE |
| WFWilliams Furnace CO | Colton | CA | Machinery Manufacturing333414 | 100-499 | ◐ LIKELY ACTIVE |
| WLWinpak Lane INC | Rialto | CA | Machinery Manufacturing333993 | 100-499 | ◐ LIKELY ACTIVE |
| WHWoodward Hrt INC | Valencia | CA | Machinery Manufacturing333995 | — | ◐ LIKELY ACTIVE |
| XSXtreme Selma | Selma | CA | Fabricated Metal Product Manufacturing332313 | 20-99 | ◐ LIKELY ACTIVE |
| 7M7 Metals Manufacturing | San Jose | CA | Machinery Manufacturing333415 | 20-99 | ◐ LIKELY ACTIVE |
| AFAb Fab, INC. | Tracy | CA | Machinery Manufacturing333999 | 1-19 | ◐ LIKELY ACTIVE |
| AMAirfilm Manufacturing INC Dba Meeker Aviation | Georgetown | CA | Machinery Manufacturing333517 | — | ◐ LIKELY ACTIVE |
| ARAllee Rees CO INC Dba Arc Cutting Tools | Porterville | CA | Fabricated Metal Product Manufacturing332721 | 1-19 | ◐ LIKELY ACTIVE |
| ACAlzeta Corporation | San Jose | CA | Machinery Manufacturing333414 | 1-19 | ◐ LIKELY ACTIVE |
| AMApplied Materials INC Arques Campus | Sunnyvale | CA | Machinery Manufacturing333242 | — | ◐ LIKELY ACTIVE |
| AVAqueous Vets | Redding | CA | Machinery Manufacturing333318 | 100-499 | ◐ LIKELY ACTIVE |