| AAAll American Products | Valencia | — | ◇ UNVERIFIED |
| AAAlliedsignal Aerospace W Coas | Burbank | — | ◇ UNVERIFIED |
| ALAllison Lie | Los Angeles | — | ◇ UNVERIFIED |
| ALAllison Lie | Los Angeles | — | ◇ UNVERIFIED |
| ALAllison Lie | Universal City | — | ◇ UNVERIFIED |
| ADAllport Dba Santa Fe Super 10's | Santa Fe Spgs | — | ◇ UNVERIFIED |
| AGAllrite Grinding & Mfg INC | Santa Clarita | — | ◇ UNVERIFIED |
| AGAlonso Grading and Demolition, Inc. | Los Angeles | — | ◇ UNVERIFIED |
| AFAluminex Finishing INC | Sun Valley | — | ◇ UNVERIFIED |
| AAAmada America, INC. | La Mirada | — | ◇ UNVERIFIED |
| AIAmda INC | Los Angeles | — | ◇ UNVERIFIED |
| ACAmerican Combustion Technologies | Paramount | — | ◇ UNVERIFIED |
| ACAmerican Condenser & Coil | Gardena | — | ◇ UNVERIFIED |
| ARAmerican Remedial Technologies | Lynwood | — | ◇ UNVERIFIED |
| ASAmerican Spring INC | Los Angeles | — | ◇ UNVERIFIED |
| ASAmerican Stainless Pumps INC | Carson | — | ◇ UNVERIFIED |
| AIAmigos Industrial Services & Repairs | South El Monte | — | ◇ UNVERIFIED |
| AAAmmco Aquisition LLC | Gardena | — | ◇ UNVERIFIED |
| AMAngelus Metal Finishing | Los Angeles | — | ◇ UNVERIFIED |
| AIAnitsa INC Dba Valet Services Laundry | Bell Gardens | — | ◇ UNVERIFIED |
| ABApex Brand Solutions LLC | Gardena | — | ◇ UNVERIFIED |
| ABAPT Bearing, Inc. | City of Industry | — | ◇ UNVERIFIED |
| AAAsbury Apartments LP | Los Angeles | — | ◇ UNVERIFIED |
| AEAscent Elevator Services INC | Signal Hill | — | ◇ UNVERIFIED |
| AEAscent Elevator Services INC | Cerritos | — | ◇ UNVERIFIED |
| ATAsi Truss Works INC. | Santa Fe Springs | — | ◇ UNVERIFIED |
| ASAsmar Studio | Gardena | — | ◇ UNVERIFIED |
| ACAstro Custom Injection Molding, INC. Dba Addicks E | Bell Gardens | — | ◇ UNVERIFIED |
| AIAstro-fab INC | Pico Rivera | — | ◇ UNVERIFIED |
| ACAtlas Copco Compressors LLC | Cerritos | — | ◇ UNVERIFIED |
| ACAtlas Copco Compressors LLC | Cerritos | — | ◇ UNVERIFIED |
| ACAtlas Copco Compressors LLC | Santa Fe Springs | — | ◇ UNVERIFIED |
| ALAtlas Lens CO | Burbank | — | ◇ UNVERIFIED |
| AVAtlas V Marengo LLC | Pasadena | — | ◇ UNVERIFIED |
| AIAttachCo Inc. | Long Beach | — | ◇ UNVERIFIED |
| AIAugerscope INC | Sylmar | — | ◇ UNVERIFIED |
| ASAvalon Sheet Metal & Ironwork | Agoura Hills | — | ◇ UNVERIFIED |
| AMAvery M. Golden | North Hollywood | — | ◇ UNVERIFIED |
| ARAvis Roto Die CO INC | Los Angeles | — | ◇ UNVERIFIED |
| AEAyala Engineering | Pomona | — | ◇ UNVERIFIED |
| APAzurell Papka | Chatsworth | — | ◇ UNVERIFIED |
| BAB8 Alondra Ii Industrial Owner LLC | Carson | — | ◇ UNVERIFIED |
| BIBabcock INC | La Mirada | — | ◇ UNVERIFIED |
| BDBaldwin Distribution Center | City of Industry | — | ◇ UNVERIFIED |
| BWBarber Welding and Manufacturing Company | Bell Gardens | — | ◇ UNVERIFIED |
| BCBarnhart Crane and Rigging CO | Paramount | — | ◇ UNVERIFIED |
| BCBarry Controls | Burbank | — | ◇ UNVERIFIED |
| BCBay Cities Tin Shop INC Dba Bay Cities Metal Products | Gardena | — | ◇ UNVERIFIED |
| BSBay Street Santa Monica, LLC | Santa Monica | — | ◇ UNVERIFIED |
 B&b Manufacturing CO INC | Valencia | — | ◇ UNVERIFIED |
