| APArtistic Plating & Metal Finis | Anaheim | — | ◇ UNVERIFIED |
 Atlas Specialty Products INC | Anaheim | — | ◇ UNVERIFIED |
| AMAvatar Machine LLC | Fountain Valley | — | ◇ UNVERIFIED |
| AAvco | Santa Ana | — | ◇ UNVERIFIED |
| AEAxial Equity, LLC | Anaheim | — | ◇ UNVERIFIED |
| AMAz Mfg INC | Costa Mesa | — | ◇ UNVERIFIED |
 Azure Microdynamics Inc, Dba Azure Ortho | Lake Forest | — | ◇ UNVERIFIED |
| BMBapko Metal INC | Orange | — | ◇ UNVERIFIED |
| BMBapko Metal INC | Orange | — | ◇ UNVERIFIED |
| BOBay Ornamental Iron & Welding | Costa Mesa | — | ◇ UNVERIFIED |
| BSBayside Shutters | Orange | — | ◇ UNVERIFIED |
| BHBazz Houston International | Garden Grove | — | ◇ UNVERIFIED |
| BCB & C Welding and Iron Works | Garden Grove | — | ◇ UNVERIFIED |
| BEB E Aerospace Services Divisio | Orange | — | ◇ UNVERIFIED |
| BABeks Acquisition INC Dba Bc2 Environmental | Orange | — | ◇ UNVERIFIED |
| BABel Air Machining CO | Santa Ana | — | ◇ UNVERIFIED |
| BEB & E Mfg CO INC | Stanton | — | ◇ UNVERIFIED |
| BMBenner Metals Corporation | Fullerton | — | ◇ UNVERIFIED |
| BPBeo-mag Plating INC | Santa Ana | — | ◇ UNVERIFIED |
| BBBetter Bolts, LLC | Rancho Mission Viejo | — | ◇ UNVERIFIED |
| BEBfm Energy Products CORP | Santa Ana | — | ◇ UNVERIFIED |
| BOBlack Oxide Ind INC | Anaheim | — | ◇ UNVERIFIED |
| BLBoarsk Leasing SM LLC | Buena Park | — | ◇ UNVERIFIED |
| BTBodycote Thermal Processing | Westminster | — | ◇ UNVERIFIED |
| BMBradfield Manufacturing INC | Santa Ana | — | ◇ UNVERIFIED |
| BMBradfield Mfg CO | Santa Ana | — | ◇ UNVERIFIED |
| BXBrand X Metals, INC | Anaheim | — | ◇ UNVERIFIED |
| BIBrasstech INC | Santa Ana | — | ◇ UNVERIFIED |
| BCBrunswick CORP Defense Div | Costa Mesa | — | ◇ UNVERIFIED |
| BPBuena Park Chrome | Buena Park | — | ◇ UNVERIFIED |
| CICal-aurum Industries | Huntington Beach | — | ◇ UNVERIFIED |
| CRCaliber Range CORP | Huntington Beach | — | ◇ UNVERIFIED |
| CCCalifornia Chassis INC | Anaheim | — | ◇ UNVERIFIED |
| CGCarlos Gabriel Design | La Habra | — | ◇ UNVERIFIED |
| CICartel Industries LLC | Irvine | — | ◇ UNVERIFIED |
| CICavotec Inet US INC. | Cypress | — | ◇ UNVERIFIED |
| CVCd Video Manufacturing INC | Santa Ana | — | ◇ UNVERIFIED |
| CPCentral Powder Coating | Brea | — | ◇ UNVERIFIED |
| CSC-fab, Steven De Groote, Dba | Costa Mesa | — | ◇ UNVERIFIED |
| CWC&f Wire Products Divwstecher Enterprises INC | Stanton | — | ◇ UNVERIFIED |
| CECheck Engineering & Stamping | Irvine | — | ◇ UNVERIFIED |
| CECheek Engineering & Stamping | Tustin | — | ◇ UNVERIFIED |
 Chief Industries LLC | Huntington Beach | — | ◇ UNVERIFIED |
| CJC & J Engravers | Anaheim | — | ◇ UNVERIFIED |
| CICkd Industries INC | La Habra | — | ◇ UNVERIFIED |
| CEC&l Engineering | Buena Park | — | ◇ UNVERIFIED |
| CMCmf (custom Metal Fabricators) | Orange | — | ◇ UNVERIFIED |
| CSCmt Sheet Metal | Laguna Hills | — | ◇ UNVERIFIED |
 Coastline Metal Finishing | Garden Grove | — | ◇ UNVERIFIED |
| CSCoast Sheet Metal INC | Costa Mesa | — | ◇ UNVERIFIED |
