| AWAccuright Wire EDM. | Santa Ana | — | ◇ UNVERIFIED |
| ACAcme Castings INC | Huntington Park | — | ◇ UNVERIFIED |
| ACAcme Castings INC | Huntington Park | — | ◇ UNVERIFIED |
| AGAden Guan Incorporated | South El Monte | — | ◇ UNVERIFIED |
| AGAdj Group, LLC | Vernon | — | ◇ UNVERIFIED |
| AEAdvenira Enterprises INC | Sunnyvale | — | ◇ UNVERIFIED |
 Aepnus Technology INC | Emeryville | — | ◇ UNVERIFIED |
| ATAgilent Technologies | Hayward | — | ◇ UNVERIFIED |
| ANAir Nail Company | South Gate | — | ◇ UNVERIFIED |
| ASAir Show Network | Oakland | — | ◇ UNVERIFIED |
| AFAlcast Foundry INC | Redondo Beach | — | ◇ UNVERIFIED |
| AFAlegacy Food Services Group INC | Santa Fe Springs | — | ◇ UNVERIFIED |
| AFAlhambra Foundry CO LTD | Alhambra | — | ◇ UNVERIFIED |
| ASAllan Schaffer | Livermore | — | ◇ UNVERIFIED |
| ASAllied Signal Aerospace CO | Torrance | — | ◇ UNVERIFIED |
| AIAlmanon INC | Santa Ana | — | ◇ UNVERIFIED |
| AFAlphacast Foundry INC | Azusa | — | ◇ UNVERIFIED |
| AFAlphacast Foundry INC | Azusa | — | ◇ UNVERIFIED |
| ALAlrayco, LLC | Adelanto | — | ◇ UNVERIFIED |
| AMAlumax Mill Products INC | Riverside | — | ◇ UNVERIFIED |
| ACAluminum Company of America Corona Operation | Corona | — | ◇ UNVERIFIED |
 Aluminum Precision Products INC | Santa Ana | — | ◇ UNVERIFIED |
| Aluminum Precision Products INC | Santa Ana | — | ◇ UNVERIFIED |
| APAluminum Processing | Northridge | — | ◇ UNVERIFIED |
| ASAluminum Seating INC. | Riverside | — | ◇ UNVERIFIED |
| AIAlumistar INC Dba Aluminum Casting Company | Santa Fe Springs | — | ◇ UNVERIFIED |
| ALAlustretch La LLC | Los Angeles | — | ◇ UNVERIFIED |
| AEAmerican Eagle Wheel Corporati | Chino | — | ◇ UNVERIFIED |
| APA&m Powder | Los Angeles | — | ◇ UNVERIFIED |
| AGAngele Garcia & Palma Ponce Dba Aluminum Processing | Northridge | — | ◇ UNVERIFIED |
| ACApex Conveyor Systems INC | Murrieta | — | ◇ UNVERIFIED |
| AMApollo Masters Corporation | Banning | — | ◇ UNVERIFIED |
| ABAran Bagher | Santa Ana | — | ◇ UNVERIFIED |
| AMAray Medical Technology INC Dba West Coast | Redding | — | ◇ UNVERIFIED |
| ABArrowhead Brass and Plumbing, LLC | Los Angeles | — | ◇ UNVERIFIED |
| ARArrow Recycling Solutions, Inc. | Hawthorne | — | ◇ UNVERIFIED |
| AMArtsons Manufacturing CO. | Cudahy | — | ◇ UNVERIFIED |
| AFArtworks Foundry LLC | Berkeley | — | ◇ UNVERIFIED |
| ACAtlas Copco Maft-trench CO LLC | Santa Maria | — | ◇ UNVERIFIED |
| APAtlas Pacific Corporation | Bloomington | — | ◇ UNVERIFIED |
| AIATMF, Inc. | Clovis | — | ◇ UNVERIFIED |
| APAul Pipe Tube & Steel INC | Vernon | — | ◇ UNVERIFIED |
| ALAutobend Laser Steel Rule Dies, INC. | Chula Vista | — | ◇ UNVERIFIED |
| BHBag House Industrial Sheet Metal | Corona | — | ◇ UNVERIFIED |
| BHBaron Hr | Pittsburg | — | ◇ UNVERIFIED |
| BBBarrett Buisness Services INC | Gardena | — | ◇ UNVERIFIED |
| BDBelt Drives LTD | Brea | — | ◇ UNVERIFIED |
| BCBender Ccp | Chula Vista | — | ◇ UNVERIFIED |
| BCBender Ccp INC | Corona | — | ◇ UNVERIFIED |
| BFBenicia Fabrication and Machines, INC. | Benicia | — | ◇ UNVERIFIED |
