| TETechplate Engineering CO | Anaheim | — | ◇ UNVERIFIED |
| TUTerra Universal INC | Orange | — | ◇ UNVERIFIED |
| TATextron Aerospace Fasteners | Santa Ana | — | ◇ UNVERIFIED |
| TATfn Architectural Signage INC | Santa Ana | — | ◇ UNVERIFIED |
| TEThermech Eng CORP | Anaheim | — | ◇ UNVERIFIED |
| TWThe Wolfe Family Revocable Living Trust of 2008 | Fullerton | — | ◇ UNVERIFIED |
| TSThornton Steel | Anaheim | — | ◇ UNVERIFIED |
| TSTinco Sheet Metal Contractors | Irvine | — | ◇ UNVERIFIED |
| TSTinco Sheet Metal, INC. | Mission Viejo | — | ◇ UNVERIFIED |
| TLT L Machine, Inc. | Garden Grove | — | ◇ UNVERIFIED |
| TNT N Sheet Metal INC | Fountain Valley | — | ◇ UNVERIFIED |
| TEToolander Engineering INC | San Clemente | — | ◇ UNVERIFIED |
| TIToolceptions, Inc. | Mission Viejo | — | ◇ UNVERIFIED |
| TCTool Componets INC Dba E-z Lock | Los Alamitos | — | ◇ UNVERIFIED |
| TDToyo Dupont International Ink | Fountain Valley | — | ◇ UNVERIFIED |
 T/q Systems INC. | Anaheim | — | ◇ UNVERIFIED |
| TVTres Vidas Apartments | Westminster | — | ◇ UNVERIFIED |
| TSTri-county Sanblasting INC | Irvine | — | ◇ UNVERIFIED |
| TSTriple S & H LLC | Orange | — | ◇ UNVERIFIED |
| TSTroy Systems INC | Santa Ana | — | ◇ UNVERIFIED |
| TZTrue Zero Enterprises | Huntington Beach | — | ◇ UNVERIFIED |
| TSTube Solutions | Costa Mesa | — | ◇ UNVERIFIED |
| TITunl Industries, INC | Irvine | — | ◇ UNVERIFIED |
| UCUnited Can CO | Fullerton | — | ◇ UNVERIFIED |
| UDUnited Duralume Products, INC. | Anaheim | — | ◇ UNVERIFIED |
| UMUnited Metal Products INC | Orange | — | ◇ UNVERIFIED |
| UDUniversal Dust Collector Mfg & Supply CORP Dba Udc Corporation | Anaheim | — | ◇ UNVERIFIED |
| UMUniversal Machine Shop | Huntington Beach | — | ◇ UNVERIFIED |
| USUpton Sheet Metal, Inc. | Anaheim | — | ◇ UNVERIFIED |
| VAV and L Machine, Inc. | Garden Grove | — | ◇ UNVERIFIED |
| VAV and L Machine, Inc. | Garden Grove | — | ◇ UNVERIFIED |
| VFV & F Fabrication Company INC | Garden Grove | — | ◇ UNVERIFIED |
| VIVsp, INC. | Costa Mesa | — | ◇ UNVERIFIED |
| VSVts Sheetmetal Specialist CO | Anaheim | — | ◇ UNVERIFIED |
| VTV&t Technology CORP. | Garden Grove | — | ◇ UNVERIFIED |
| WSWerner Systems INC | Santa Ana | — | ◇ UNVERIFIED |
| WSWerner Systems INC | Tustin | — | ◇ UNVERIFIED |
| WCWest Coast Manufacturing | Garden Grove | — | ◇ UNVERIFIED |
| WCWest Coast Manufacturing, Inc. | Stanton | — | ◇ UNVERIFIED |
| WCWest Coast Plating INC | Santa Ana | — | ◇ UNVERIFIED |
| WPWestcoast Plating, INC. | Santa Ana | — | ◇ UNVERIFIED |
| WDWilkins Design & Mfg INC Dba Wilschur Design & Mfg INC | Santa Ana | — | ◇ UNVERIFIED |
| ZIZincnation INC | Anaheim | — | ◇ UNVERIFIED |
| ZAZodiac Aerospace - Industry | Garden Grove | — | ◇ UNVERIFIED |
