| SDSan Diego Compressed Air Power LLC Dba Advanced Air & Vacuum | El Cajon | CA | Machinery Manufacturing333912 | — | ◇ UNVERIFIED |
| SDSan Diego Powder Coating | El Cajon | CA | Fabricated Metal Product Manufacturing332811 | — | ◇ UNVERIFIED |
| SMScreed Master Products INC | El Cajon | CA | Fabricated Metal Product Manufacturing332322 | — | ◇ UNVERIFIED |
| SHSocal Hydraulics | El Cajon | CA | Fabricated Metal Product Manufacturing332912 | — | ◇ UNVERIFIED |
| SWSpotless Water Systems LLC | El Cajon | CA | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| SIStett's Iron Horse Ranch | El Cajon | CA | Transportation Equipment Manufacturing336991 | — | ◇ UNVERIFIED |
| SSStrip Shop the | El Cajon | CA | Furniture and Related Product Manufacturing337215 | — | ◇ UNVERIFIED |
| SSSunfood Superfoods | El Cajon | CA | Food Manufacturing311423 | — | ◇ UNVERIFIED |
| SDSuspension Development Group | El Cajon | CA | Machinery Manufacturing333517 | — | ◇ UNVERIFIED |
| TITbs Irrigation Products INC Dba Tbs Manufacturing | El Cajon | CA | Plastics and Rubber Products Manufacturing326122 | — | ◇ UNVERIFIED |
| TAThe Arches | El Cajon | CA | Nonmetallic Mineral Product Manufacturing327999 | — | ◇ UNVERIFIED |
| TLThe Lubrizol Corporation | El Cajon | CA | Chemical Manufacturing325110 | — | ◇ UNVERIFIED |
| TJThomas James & Jennifer Yeager, a Partnership | El Cajon | CA | Furniture and Related Product Manufacturing337110 | — | ◇ UNVERIFIED |
| TSThompson Speed and Marine | El Cajon | CA | Transportation Equipment Manufacturing336612 | — | ◇ UNVERIFIED |
| TPThunderbird Products INC | El Cajon | CA | Furniture and Related Product Manufacturing337215 | — | ◇ UNVERIFIED |
| TRThunder Ranch | El Cajon | CA | Transportation Equipment Manufacturing336111 | — | ◇ UNVERIFIED |
| TEThyssen Elevator CORP | El Cajon | CA | Machinery Manufacturing333921 | — | ◇ UNVERIFIED |
| TSTitan Steel | El Cajon | CA | Fabricated Metal Product Manufacturing332312 | — | ◇ UNVERIFIED |
| TMTlp Metal Works INC. | El Cajon | CA | Fabricated Metal Product Manufacturing332323 | — | ◇ UNVERIFIED |
| TMTlp Metalworks LLC | El Cajon | CA | Transportation Equipment Manufacturing336390 | — | ◇ UNVERIFIED |
| TGTriumph Group | El Cajon | CA | Transportation Equipment Manufacturing336413 | — | ◇ UNVERIFIED |
| TITsg Industrial Coating LLC | El Cajon | CA | Miscellaneous Manufacturing339910 | — | ◇ UNVERIFIED |
| TVTucker's Valley Furniture | El Cajon | CA | Machinery Manufacturing333415 | — | ◇ UNVERIFIED |
| UEUS Ethanol LLC | El Cajon | CA | Chemical Manufacturing325193 | — | ◇ UNVERIFIED |
| VCV4 Custom Cabinets, INC. | El Cajon | CA | Furniture and Related Product Manufacturing337110 | — | ◇ UNVERIFIED |
| VCValley Casework INC | El Cajon | CA | Furniture and Related Product Manufacturing337110 | — | ◇ UNVERIFIED |
| VIVcsd INC | El Cajon | CA | Furniture and Related Product Manufacturing337110 | — | ◇ UNVERIFIED |
| VWVernon Way, LLC | El Cajon | CA | Fabricated Metal Product Manufacturing332312 | — | ◇ UNVERIFIED |
| VSVision Systems INC | El Cajon | CA | Nonmetallic Mineral Product Manufacturing327211 | — | ◇ UNVERIFIED |
| VSVision Systems, INC | El Cajon | CA | Fabricated Metal Product Manufacturing332321 | — | ◇ UNVERIFIED |
| WPWaterdog Products INC | El Cajon | CA | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| WMWatkins Mfg CORP Dba Caldera Spas | El Cajon | CA | Plastics and Rubber Products Manufacturing326191 | — | ◇ UNVERIFIED |
| WMWeldmac Mfg CO | El Cajon | CA | Fabricated Metal Product Manufacturing332322 | — | ◇ UNVERIFIED |
| WIWilclif INC | El Cajon | CA | Furniture and Related Product Manufacturing337215 | — | ◇ UNVERIFIED |
| WSWilliams & Sons Masonry | El Cajon | CA | Machinery Manufacturing333923 | — | ◇ UNVERIFIED |
