| AEAdvenira Enterprises INC | Sunnyvale | CA | Primary Metal Manufacturing331313 | — | ◇ UNVERIFIED |
 Aepnus Technology INC | Emeryville | CA | Primary Metal Manufacturing331313 | — | ◇ UNVERIFIED |
| ATAgilent Technologies | Hayward | CA | Primary Metal Manufacturing331313 | — | ◇ UNVERIFIED |
| ANAir Nail Company | South Gate | CA | Primary Metal Manufacturing331222 | — | ◇ UNVERIFIED |
| ASAir Show Network | Oakland | CA | Primary Metal Manufacturing331420 | — | ◇ UNVERIFIED |
| AFAlcast Foundry INC | Redondo Beach | CA | Primary Metal Manufacturing331110 | — | ◇ UNVERIFIED |
| AFAlegacy Food Services Group INC | Santa Fe Springs | CA | Primary Metal Manufacturing331524 | — | ◇ UNVERIFIED |
| AFAlhambra Foundry CO LTD | Alhambra | CA | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| ASAllan Schaffer | Livermore | CA | Primary Metal Manufacturing331110 | — | ◇ UNVERIFIED |
| AIAlmanon INC | Santa Ana | CA | Primary Metal Manufacturing331410 | — | ◇ UNVERIFIED |
| AFAlphacast Foundry INC | Azusa | CA | Primary Metal Manufacturing331524 | — | ◇ UNVERIFIED |
| AMAlumax Mill Products INC | Riverside | CA | Primary Metal Manufacturing331315 | — | ◇ UNVERIFIED |
| ACAluminum Company of America Corona Operation | Corona | CA | Primary Metal Manufacturing331313 | — | ◇ UNVERIFIED |
 Aluminum Precision Products INC | Santa Ana | CA | Primary Metal Manufacturing331521 | — | ◇ UNVERIFIED |
| Aluminum Precision Products INC | Santa Ana | CA | Primary Metal Manufacturing331524 | — | ◇ UNVERIFIED |
| APAluminum Processing | Northridge | CA | Primary Metal Manufacturing331315 | — | ◇ UNVERIFIED |
| ASAluminum Seating INC. | Riverside | CA | Primary Metal Manufacturing331315 | — | ◇ UNVERIFIED |
| ALAlustretch La LLC | Los Angeles | CA | Primary Metal Manufacturing331315 | — | ◇ UNVERIFIED |
| AEAmerican Eagle Wheel Corporati | Chino | CA | Primary Metal Manufacturing331523 | — | ◇ UNVERIFIED |
| AGAngele Garcia & Palma Ponce Dba Aluminum Processing | Northridge | CA | Primary Metal Manufacturing331314 | — | ◇ UNVERIFIED |
| ACApex Conveyor Systems INC | Murrieta | CA | Primary Metal Manufacturing331410 | — | ◇ UNVERIFIED |
| AMApollo Masters Corporation | Banning | CA | Primary Metal Manufacturing331524 | — | ◇ UNVERIFIED |
| ABAran Bagher | Santa Ana | CA | Primary Metal Manufacturing331110 | — | ◇ UNVERIFIED |
| AMAray Medical Technology INC Dba West Coast | Redding | CA | Primary Metal Manufacturing331492 | — | ◇ UNVERIFIED |
| ABArrowhead Brass and Plumbing, LLC | Los Angeles | CA | Primary Metal Manufacturing331420 | — | ◇ UNVERIFIED |
| ARArrow Recycling Solutions, Inc. | Hawthorne | CA | Primary Metal Manufacturing331313 | — | ◇ UNVERIFIED |
| AMArtsons Manufacturing CO. | Cudahy | CA | Primary Metal Manufacturing331111 | — | ◇ UNVERIFIED |
| AFArtworks Foundry LLC | Berkeley | CA | Primary Metal Manufacturing331525 | — | ◇ UNVERIFIED |
| ACAtlas Copco Maft-trench CO LLC | Santa Maria | CA | Primary Metal Manufacturing331492 | — | ◇ UNVERIFIED |
| APAtlas Pacific Corporation | Bloomington | CA | Primary Metal Manufacturing331410 | — | ◇ UNVERIFIED |
| APAul Pipe Tube & Steel INC | Vernon | CA | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| ALAutobend Laser Steel Rule Dies, INC. | Chula Vista | CA | Primary Metal Manufacturing331222 | — | ◇ UNVERIFIED |
| BHBag House Industrial Sheet Metal | Corona | CA | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| BDBelt Drives LTD | Brea | CA | Primary Metal Manufacturing331523 | — | ◇ UNVERIFIED |
| BCBender Ccp | Chula Vista | CA | Primary Metal Manufacturing331523 | — | ◇ UNVERIFIED |
| BCBender Ccp INC | Corona | CA | Primary Metal Manufacturing331221 | — | ◇ UNVERIFIED |
| BFBenicia Fabrication and Machines, INC. | Benicia | CA | Primary Metal Manufacturing331110 | — | ◇ UNVERIFIED |
| BCBesser Company USA | Compton | CA | Primary Metal Manufacturing331411 | — | ◇ UNVERIFIED |
| BUBeta USA INC | Paso Robles | CA | Primary Metal Manufacturing331523 | — | ◇ UNVERIFIED |
| BFB F Steel INC | Harbor City | CA | Primary Metal Manufacturing331111 | — | ◇ UNVERIFIED |
| BMBralco Metals Reliance Steel CORP | La Mirada | CA | Primary Metal Manufacturing331513 | — | ◇ UNVERIFIED |
| BPBrenntag Pacific, INC. | Jurupa Valley | CA | Primary Metal Manufacturing331313 | — | ◇ UNVERIFIED |
| BEBrillouin Energy CORP. | Emeryville | CA | Primary Metal Manufacturing331222 | — | ◇ UNVERIFIED |
| BCBrittany Catania | San Bernardino | CA | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| BSBrodhead Steel Prod | South San Francisco | CA | Primary Metal Manufacturing331221 | — | ◇ UNVERIFIED |
| BIBrothers Ironworks Co, Sarkis Tatarian | Burbank | CA | Primary Metal Manufacturing331110 | — | ◇ UNVERIFIED |
| BEBrunton Enterprises Inc,plas Tal Mfg CO | Santa Fe Springs | CA | Primary Metal Manufacturing331110 | — | ◇ UNVERIFIED |
| BBBuckner By Storm | Fresno | CA | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| BBBuilders Brass Wks CORP (eis U | Los Angeles | CA | Primary Metal Manufacturing331525 | — | ◇ UNVERIFIED |
| CSCalbody Steel Forming LLC | Benicia | CA | Primary Metal Manufacturing331221 | — | ◇ UNVERIFIED |
