 Advanced Packaging & Products | Gardena | CA | Chemical Manufacturing325510 | — | ◇ UNVERIFIED |
| APAdvanced Pattern and Mold | Ontario | CA | Primary Metal Manufacturing331313 | — | ◇ UNVERIFIED |
| ASAdvanced Spa Designs | Anaheim | CA | Plastics and Rubber Products Manufacturing326191 | — | ◇ UNVERIFIED |
| ASAdvanced Structures INC | Escondido | CA | Plastics and Rubber Products Manufacturing326199 | — | ◇ UNVERIFIED |
| APAdvance Plastics | National City | CA | Machinery Manufacturing333220 | — | ◇ UNVERIFIED |
| ATAdvance Trading CORP | Chino | CA | Computer and Electronic Product Manufacturing334613 | — | ◇ UNVERIFIED |
| ASAdvantage Sealing Systems INC | Fontana | CA | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| AAAe Anodizing | San Jose | CA | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| AEA & E Anodizing Company Incorporated | San Jose | CA | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
 Aero Dynamic Machining | Garden Grove | CA | Fabricated Metal Product Manufacturing332710 | — | ◇ UNVERIFIED |
| APAerodynamic Plating Company | Gardena | CA | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| ACAero-electric Connector, INC | Torrance | CA | Computer and Electronic Product Manufacturing334417 | — | ◇ UNVERIFIED |
| AEAero Engines INC | Los Angeles | CA | Nonmetallic Mineral Product Manufacturing327122 | — | ◇ UNVERIFIED |
| AMAero Master Forming | City of Industry | CA | Transportation Equipment Manufacturing336413 | — | ◇ UNVERIFIED |
| ACAeropres Corporation - San Dimas, Ca | San Dimas | CA | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| AFAerospares Fabrication LLC | Paramount | CA | Transportation Equipment Manufacturing336413 | — | ◇ UNVERIFIED |
| AUAero Union CORP | Chico | CA | Transportation Equipment Manufacturing336413 | — | ◇ UNVERIFIED |
| ARAffymax Research Institute | Palo Alto | CA | Computer and Electronic Product Manufacturing334413 | — | ◇ UNVERIFIED |
| AIAffymetrix INC | Broderick | CA | Computer and Electronic Product Manufacturing334516 | — | ◇ UNVERIFIED |
| AGAgc Glass-2008 | Victorville | CA | Nonmetallic Mineral Product Manufacturing327211 | — | ◇ UNVERIFIED |
| ACAgfa CORP | Burbank | CA | Printing and Related Support Activities323111 | — | ◇ UNVERIFIED |
| ATAgilent Technologies | Newark | CA | Computer and Electronic Product Manufacturing334413 | — | ◇ UNVERIFIED |
| ATAgilent Technologies INC | Santa Clara | CA | Computer and Electronic Product Manufacturing334413 | — | ◇ UNVERIFIED |
| AMAgi Manufacturing INC | Stockton | CA | Machinery Manufacturing333911 | — | ◇ UNVERIFIED |
| ATAgro Tech Corporation Costa Mesa | Costa Mesa | CA | Fabricated Metal Product Manufacturing332912 | — | ◇ UNVERIFIED |
| APA-h Plating | Burbank | CA | Fabricated Metal Product Manufacturing332812 | — | ◇ UNVERIFIED |
| AHAircraft Hawthorne Facility | Hawthorne | CA | Transportation Equipment Manufacturing336413 | — | ◇ UNVERIFIED |
| AIAir Industries Company | Garden Grove | CA | Fabricated Metal Product Manufacturing332722 | — | ◇ UNVERIFIED |
| ALAir Liquide CORP | Etiwanda | CA | Chemical Manufacturing325120 | — | ◇ UNVERIFIED |
| ALAir Logistics CORP | Pasadena | CA | Plastics and Rubber Products Manufacturing326130 | — | ◇ UNVERIFIED |
| ASAirport Self Storage | Oxnard | CA | Machinery Manufacturing333921 | — | ◇ UNVERIFIED |
| APAir Products Polymers LP | Rowland Heights | CA | Chemical Manufacturing325211 | — | ◇ UNVERIFIED |
| APAir Products, Sacramento | Sacramento | CA | Chemical Manufacturing325120 | — | ◇ UNVERIFIED |
| ARAk Recycling | Compton | CA | Computer and Electronic Product Manufacturing334111 | — | ◇ UNVERIFIED |
| ANAkzo Nobel Coating | Orange | CA | Chemical Manufacturing325510 | — | ◇ UNVERIFIED |
| AAAlatus Aerosystems | Chatsworth | CA | Fabricated Metal Product Manufacturing332321 | — | ◇ UNVERIFIED |
| AAAlatus Aerosystems | Walnut | CA | Transportation Equipment Manufacturing336411 | — | ◇ UNVERIFIED |
| APAlbertos Polishing and Refinishing | Pasadena | CA | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| AIAlcoa INC (formerly Weslock Site) | Los Angeles | CA | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| AIAlco Iron & Metal | San Leandro | CA | Chemical Manufacturing325520 | — | ◇ UNVERIFIED |
| AIAlco Iron Metals | Stockton | CA | Fabricated Metal Product Manufacturing332431 | — | ◇ UNVERIFIED |
| AFAlden Farris | San Diego | CA | Fabricated Metal Product Manufacturing332812 | — | ◇ UNVERIFIED |
| ADAlfco - Division of Home Care Ind. INC. | Carpinteria | CA | Chemical Manufacturing325212 | — | ◇ UNVERIFIED |
| ACAlflex CORP | Long Beach | CA | Electrical Equipment, Appliance & Component Manufacturing335931 | — | ◇ UNVERIFIED |
| AAAll American Asphalt | San Fernando | CA | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| AAAll American Asphalt,all Amer Aggregates | Irvine | CA | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| AAAll American Cabinetry INC Dba All American Kitchens | Van Nuys | CA | Furniture and Related Product Manufacturing337129 | 1-19 | ◇ UNVERIFIED |
| ACAllblack Company INC | Santa Fe Springs | CA | Fabricated Metal Product Manufacturing332812 | — | ◇ UNVERIFIED |
| AGAll Good Pallets INC | Stockton | CA | Wood Product Manufacturing321920 | — | ◇ UNVERIFIED |
| AGAll Green Electronics Recycling | Garden Grove | CA | Computer and Electronic Product Manufacturing334111 | — | ◇ UNVERIFIED |
