| RCRoto-die Company INC | Anaheim | — | ◇ UNVERIFIED |
| RCRpi Coating, INC. | Stanton | — | ◇ UNVERIFIED |
| RPRs Precision INC | Anaheim | — | ◇ UNVERIFIED |
| RIRudolph International, INC. | Brea | — | ◇ UNVERIFIED |
| STSacher Trust | Santa Ana | — | ◇ UNVERIFIED |
| SSaf-t-flo | Anaheim | — | ◇ UNVERIFIED |
| SLSalher, LLC | Fountain Valley | — | ◇ UNVERIFIED |
| SLSandfrog, LLC | Santa Ana | — | ◇ UNVERIFIED |
| SMSanie Mfg CO INC | Santa Ana | — | ◇ UNVERIFIED |
| SASanta Ana Plating INC | Santa Ana | — | ◇ UNVERIFIED |
| SMSb Machining | Anaheim | — | ◇ UNVERIFIED |
 Schuff Steel Company | Aliso Viejo | — | ◇ UNVERIFIED |
| SLS.e.s.s. LLC | Anaheim | — | ◇ UNVERIFIED |
| SCSev - Cal Tool INC. | Santa Ana | — | ◇ UNVERIFIED |
| SESeychelle Environmental Technologies | San Juan Capistrano | — | ◇ UNVERIFIED |
| SCShamaze Custom Coatings | Lake Forest | — | ◇ UNVERIFIED |
| SCShur-lok CORP | Irvine | — | ◇ UNVERIFIED |
| SMSihilling Metal Polishing | Santa Ana | — | ◇ UNVERIFIED |
| SESinger Equities INC Dba Triad Bellows Design & Mfg | Anaheim | — | ◇ UNVERIFIED |
 Sky Rider Equipment CO INC | Anaheim | — | ◇ UNVERIFIED |
| SESl Engineering CO | Huntington Beach | — | ◇ UNVERIFIED |
| SESl Engineering Company | Costa Mesa | — | ◇ UNVERIFIED |
| SESml Engineering INC | Santa Ana | — | ◇ UNVERIFIED |
| SISmr INC Dba Tube Solutions | Costa Mesa | — | ◇ UNVERIFIED |
| SBSouth Bay Iron, INC | Buena Park | — | ◇ UNVERIFIED |
| SCSouth Coast Quality Gold | Huntington Beach | — | ◇ UNVERIFIED |
| SSSpace Spring and Stamping CO. | Brea | — | ◇ UNVERIFIED |
| SISpan-o-matic INC | Brea | — | ◇ UNVERIFIED |
| SPSpecialized Powder Coating | Huntington Beach | — | ◇ UNVERIFIED |
| SBSpectrum Brands INC Dba Spectrum Brands Hhi | Foothill Ranch | — | ◇ UNVERIFIED |
| SMSpeedway Metal Finishing | Santa Ana | — | ◇ UNVERIFIED |
| SPSpeedway Polishing & Coating | Santa Ana | — | ◇ UNVERIFIED |
| STSps Technologies INC | Santa Ana | — | ◇ UNVERIFIED |
| SRS & R Architectural Metals INC | Anaheim | — | ◇ UNVERIFIED |
| SLSt2 LLC | Placentia | — | ◇ UNVERIFIED |
| SMStainless Micro-polish INC | Anaheim | — | ◇ UNVERIFIED |
| SGStanton Grinding INC | La Habra | — | ◇ UNVERIFIED |
| SIStar Instrument | Orange | — | ◇ UNVERIFIED |
| SMStar Manufacturing,llc | Orange | — | ◇ UNVERIFIED |
| SWStd Wire Products INC. | Huntington Beach | — | ◇ UNVERIFIED |
 Steeldyne Industries Dba Abc Sheet Metal | Anaheim | — | ◇ UNVERIFIED |
 Steele Industries | San Clemente | — | ◇ UNVERIFIED |
| SPSt Pierre/gonzalez Ent/w Coast Ind Paint | Anaheim | — | ◇ UNVERIFIED |
| SIStreetscape INC | Huntington Beach | — | ◇ UNVERIFIED |
| SSStructural Steel Fabricators INC | Stanton | — | ◇ UNVERIFIED |
| SDSulek Descartes LC | Lake Forest | — | ◇ UNVERIFIED |
| SCSuperior Connector Plating, INC. | Anaheim | — | ◇ UNVERIFIED |
| SMSuperior Machining LLC | Brea | — | ◇ UNVERIFIED |
| TATag Asset I LLC | Lake Forest | — | ◇ UNVERIFIED |
| TCTech Craft | Santa Ana | — | ◇ UNVERIFIED |
