| APAcapulco Polishing CORP | Compton | — | ◇ UNVERIFIED |
| ASAccess Steel Fabricating, INC | Pacoima | — | ◇ UNVERIFIED |
| AMAce Machine Shop INC. | Lynwood | — | ◇ UNVERIFIED |
| APAce Plating CO INC | Los Angeles | — | ◇ UNVERIFIED |
| ACActivar Construction Products Group | Commerce | — | ◇ UNVERIFIED |
| ASActive Supply CO | Los Angeles | — | ◇ UNVERIFIED |
| ACAdams Campbell | Industry | — | ◇ UNVERIFIED |
| AIAdb Industries | Burbank | — | ◇ UNVERIFIED |
| ACAdvanced Coating & Silkscreening | Gardena | — | ◇ UNVERIFIED |
| APAerodynamic Plating Company | Gardena | — | ◇ UNVERIFIED |
| APAero Powder Coating INC | Monterey Park | — | ◇ UNVERIFIED |
| APA-h Plating | Burbank | — | ◇ UNVERIFIED |
| AAAlatus Aerosystems | Chatsworth | — | ◇ UNVERIFIED |
| APAlbertos Polishing and Refinishing | Pasadena | — | ◇ UNVERIFIED |
| AIAlcoa INC (formerly Weslock Site) | Los Angeles | — | ◇ UNVERIFIED |
 Allblack Co., INC Whittier | Whittier | — | ◇ UNVERIFIED |
| ACAllblack Company INC | Santa Fe Springs | — | ◇ UNVERIFIED |
| AMAll Metals Processing CO INC | Burbank | — | ◇ UNVERIFIED |
| AHAmerican Hvac Mfg INC | Huntington Park | — | ◇ UNVERIFIED |
| ARAmerican Racing Equipment INC | Gardena | — | ◇ UNVERIFIED |
| ARAmerican Racing Equipment INC | Rancho Dominguez | — | ◇ UNVERIFIED |
| AMAngelus Metal Finshng and Polishng Company Incorporated | Los Angeles | — | ◇ UNVERIFIED |
| AIAnodizing Industries Nadcap Facility | Los Angeles | — | ◇ UNVERIFIED |
| AMApex Metal Polishing CO | Culver City | — | ◇ UNVERIFIED |
| AIArcadia INC | Vernon | — | ◇ UNVERIFIED |
| ASArtistic Silver Plating INC | Signal Hill | — | ◇ UNVERIFIED |
| ASAsco Sintering CO | Commerce | — | ◇ UNVERIFIED |
| AFA&s Finishing, LLC | Chatsworth | — | ◇ UNVERIFIED |
| ACAstro Chrome and Polishing CORP | Van Nuys | — | ◇ UNVERIFIED |
| AMAvibank Mfg INC | Burbank | — | ◇ UNVERIFIED |
| BMBall Metal Beverage Container CORP | Torrance | — | ◇ UNVERIFIED |
| BBB & B Pipe & Tool Company | Long Beach | — | ◇ UNVERIFIED |
| BMBender Machine INC | Los Angeles | — | ◇ UNVERIFIED |
| BMBloomers Metal Stampings | Valencia | — | ◇ UNVERIFIED |
| BCBlue Circle CORP | Paramount | — | ◇ UNVERIFIED |
| BIBodycote Inc/bodycote Thermal Processing | Los Angeles | — | ◇ UNVERIFIED |
| BTBodycote Thermal Processing | Huntington Park | — | ◇ UNVERIFIED |
| BPBronzeway Plating CORP | Los Angeles | — | ◇ UNVERIFIED |
| BFBuilders Fence CO INC | Sun Valley | — | ◇ UNVERIFIED |
| BSBumper Shop INC. | Los Angeles | — | ◇ UNVERIFIED |
| BBurbank | Burbank | — | ◇ UNVERIFIED |
| CECal Electroplating INC | Los Angeles | — | ◇ UNVERIFIED |
| CICalif Ind'l Prods,div of Ill Tool Works | Santa Fe Springs | — | ◇ UNVERIFIED |
| CECalifornia Expanded Metals CO | La Puente | — | ◇ UNVERIFIED |
| CPCalifornia Polishing & Plating | Paramount | — | ◇ UNVERIFIED |
| CTCalifornia Technical Plating CORP | San Fernando | — | ◇ UNVERIFIED |
| CMC-brite Metal Finishing INC | Harbor City | — | ◇ UNVERIFIED |
| CDC & D Precision Compents INC | Pasadena | — | ◇ UNVERIFIED |
| CPCentury Parts INC | Torrance | — | ◇ UNVERIFIED |
| CCChromplate CO INC | Inglewood | — | ◇ UNVERIFIED |
