| CMCommercial Metals Company | Etiwanda | — | ◇ UNVERIFIED |
| CACommonwealth Aluminum Concast | Carson | — | ◇ UNVERIFIED |
| CECompton Enterprises | Chico | — | ◇ UNVERIFIED |
| CPConsolidated Precision Products | Port Hueneme | — | ◇ UNVERIFIED |
| CHConstruction Hotline and Management Partners, INC. | Santa Ana | — | ◇ UNVERIFIED |
| CMCoronado Manufacturing LLC | Sun Valley | — | ◇ UNVERIFIED |
| CWCove West Four Slide & Stamping CORP | Fullerton | — | ◇ UNVERIFIED |
| CPCpp - Pomona | Pomona | — | ◇ UNVERIFIED |
| CSCraftsmen Steel Buildings | Spring Valley | — | ◇ UNVERIFIED |
| CSCrest Steel | Jurupa Valley | — | ◇ UNVERIFIED |
| CLCr Laurence - Union City | Union City | — | ◇ UNVERIFIED |
| CHCsr Hydro Conduit | Corona | — | ◇ UNVERIFIED |
| CBCustom Bilt Metals LLC | Whittier | — | ◇ UNVERIFIED |
| CMCustom Machined Products | Escondido | — | ◇ UNVERIFIED |
 Dameron Alloy Foundries INC | Compton | — | ◇ UNVERIFIED |
| DWDan's Wire Mfg, INC | Fremont | — | ◇ UNVERIFIED |
| DHDavid H. Fell & Co, INC | Burlingame | — | ◇ UNVERIFIED |
| DWDavis Wire CORP Dba Viking Wire LLC | Mira Loma | — | ◇ UNVERIFIED |
 Decco Castings INC | El Cajon | — | ◇ UNVERIFIED |
| DMDel Mar Die Casting CO INC | Gardena | — | ◇ UNVERIFIED |
| DCDemar Castings | West Covina | — | ◇ UNVERIFIED |
| DMDexter Marine Products LLC | San Marcos | — | ◇ UNVERIFIED |
| DSDfp Systems | El Cajon | — | ◇ UNVERIFIED |
| DGDiamond Ground Products Weldlogic INC. | Newbury Park | — | ◇ UNVERIFIED |
| DCDie Cast Prod INC | Gardena | — | ◇ UNVERIFIED |
| DCDielectric Coating Industries INC | Hayward | — | ◇ UNVERIFIED |
| DTDimension Technology Chemical Systems INC | El Dorado | — | ◇ UNVERIFIED |
| DSDimic Steel Tech, INC. | Upland | — | ◇ UNVERIFIED |
| DCDiomics CORP | San Diego | — | ◇ UNVERIFIED |
| DDipsht | Sacramento | — | ◇ UNVERIFIED |
| DHDon Hoy Company INC | Oakdale | — | ◇ UNVERIFIED |
| DHDouglas-kent Holdings, LLC | Ontario | — | ◇ UNVERIFIED |
| DSDouglas Steel Supply | Los Angeles | — | ◇ UNVERIFIED |
| DADowell Aluminum | North Hollywood | — | ◇ UNVERIFIED |
| D1Drivetime-fontana 1c (drivetime Car Sale | Fontana | — | ◇ UNVERIFIED |
| DMDurand-wayland Machinery INC | Reedley | — | ◇ UNVERIFIED |
 Dwa Aluminum Composites, Usa, INC. | Santa Clarita | — | ◇ UNVERIFIED |
| EMEagleware Mfg CO INC | Santa Fe Springs | — | ◇ UNVERIFIED |
| ESEbenezer Steel | Phelan | — | ◇ UNVERIFIED |
| ELEdelbrock LLC | Torrance | — | ◇ UNVERIFIED |
| EPEdelbrock Permanent Mold LLC | San Jacinto | — | ◇ UNVERIFIED |
| EEfinea | Los Alamitos | — | ◇ UNVERIFIED |
| EMElectric Melting Services Company, INC. | Pico Rivera | — | ◇ UNVERIFIED |
| ETElectroflow Technologies INC | Burlingame | — | ◇ UNVERIFIED |
| EIElectrolurgymfg. INC. | Santa Ana | — | ◇ UNVERIFIED |
| EMEl Monte Non Ferrous Foundry INC. | City of Industry | — | ◇ UNVERIFIED |
| EIElpro, INC. | Grover Beach | — | ◇ UNVERIFIED |
| EHEmanate Health Family Medicine | San Dimas | — | ◇ UNVERIFIED |
| EHEmanate Health Gynecology | Glendora | — | ◇ UNVERIFIED |
| EHEmanate Health Ob/gyn | Glendora | — | ◇ UNVERIFIED |
