| RERmh Enterprises, INC | Cincinnati | OH | — | ◇ UNVERIFIED |
 Rockwell Automation Houston Cdv | Houston | TX | — | ◇ UNVERIFIED |
| RCRohrback Cosasco System | Santa Fe Springs | CA | — | ◇ UNVERIFIED |
| RERonan Engineering Company | Valencia | CA | — | ◇ UNVERIFIED |
| SISabia, Incorporated | San Diego | CA | — | ◇ UNVERIFIED |
| SRSanta Rosa Ca/advanced Coating Group/photop Technologies INC | Santa Rosa | CA | — | ◇ UNVERIFIED |
| SESchneider Electric Engineering Services LLC | La Vergne | TN | — | ◇ UNVERIFIED |
| SISensitech, Incorporated | Redmond | WA | — | ◇ UNVERIFIED |
| SCSensor Control Corporation Dba Gentra and Linear Labs | Fremont | CA | — | ◇ UNVERIFIED |
| SSSetra Systems Incorporated | Acton | MA | — | ◇ UNVERIFIED |
| SISick, INC. | Bloomington | MN | — | ◇ UNVERIFIED |
| SFSiemans - Furnas Controls | West Chicago | IL | — | ◇ UNVERIFIED |
 Siemens Industry INC | Mountain View | HI | — | ◇ UNVERIFIED |
| SISiemens Industry, INC. | Chalfont | PA | — | ◇ UNVERIFIED |
| SSSignet Scientific CO | El Monte | CA | — | ◇ UNVERIFIED |
| SISipix Imaging INC | Fremont | CA | — | ◇ UNVERIFIED |
| SJS J Electro Systems INC Dba Sje Rhombus | Detroit Lakes | MN | — | ◇ UNVERIFIED |
| SUSkf USA INC. | San Diego | CA | — | ◇ UNVERIFIED |
| SCSolano County Water Agency | Winters | CA | — | ◇ UNVERIFIED |
 Southwestern Industries INC | Rancho Dominguez | CA | — | ◇ UNVERIFIED |
| SPSpecialty Product Technologies | Elizabethtown | NC | — | ◇ UNVERIFIED |
| SSSpectra Sensors INC | Rancho Cucamonga | CA | — | ◇ UNVERIFIED |
| SHSplendid Home Workshop, LLC | Grant-Valkaria | FL | — | ◇ UNVERIFIED |
| SBStarting Block, LLC | Anchorage | AK | — | ◇ UNVERIFIED |
| S3Stepper 3 LLC | Beverly | NJ | — | ◇ UNVERIFIED |
| SWStevens Water Monitoring Systems INC | Beaverton | OR | — | ◇ UNVERIFIED |
| SCSuperior Control Systems INC | Phoenix | AZ | — | ◇ UNVERIFIED |
| SSSwitchback Systems INC | Santa Cruz | CA | — | ◇ UNVERIFIED |
| SSSwitchback Systems INC | Santa Cruz | CA | — | ◇ UNVERIFIED |
| SDSystem Dynamics Incorporated | Scottsdale | AZ | — | ◇ UNVERIFIED |
| TITa Instruments - Waters LLC | Wakefield | MA | — | ◇ UNVERIFIED |
| TTTaylor Technologies | Hunt Valley | MD | — | ◇ UNVERIFIED |
| TWTaylor Water Technologies LLC - R&d | Sparks Glencoe | MD | — | ◇ UNVERIFIED |
| TCTD Companies, LLC | Fargo | ND | — | ◇ UNVERIFIED |
| TLTecsis LP | Worthington | OH | — | ◇ UNVERIFIED |
| TMTeledyne Monitor Labs | Englewood, CO | CO | — | ◇ UNVERIFIED |
| TBThe Blodgett Company | Richmond | TX | — | ◇ UNVERIFIED |
| TGThe Gas Co./ Sempra Energy | Pico Rivera | CA | — | ◇ UNVERIFIED |
| TNThermo Neslab | Newington | NH | — | ◇ UNVERIFIED |
| TTherm-x | Hayward | CA | — | ◇ UNVERIFIED |
| TOTherm-x of California INC | Hayward | CA | — | ◇ UNVERIFIED |
| TITmco, INC. | Simonton | TX | — | ◇ UNVERIFIED |
| TOTown of Parker - Wwtp - Outfall 001 | Parker | AZ | — | ◇ UNVERIFIED |
| TITurbines, INC | Altus | OK | — | ◇ UNVERIFIED |
 United Electric Controls Precision Sensors Divisions | Milford | CT | — | ◇ UNVERIFIED |
| UEUS Epa Region 2 - Ridgewood Summerfield St Mercury Site | Ridgewood | NY | — | ◇ UNVERIFIED |
| USU S Gauge | Bartow | FL | — | ◇ UNVERIFIED |
| UAUtc Aerospace Systems - Eagan | Eagan | MN | — | ◇ UNVERIFIED |
| VFVacaville Fire Protection | Vacaville | CA | — | ◇ UNVERIFIED |
| VIVacmet, INC. | Rancho Cucamonga | CA | — | ◇ UNVERIFIED |
