| PBParker Boiler CO. | Commerce | CA | — | ◇ UNVERIFIED |
| PIPark Industries INC | Saint Cloud | MN | — | ◇ UNVERIFIED |
| PCParts Cleaning Technologies | Bowling Green | KY | — | ◇ UNVERIFIED |
| PTPederson Tool & Design INC | Anoka | MN | — | ◇ UNVERIFIED |
| PLPhu Le and Hai Le | San Jose | CA | — | ◇ UNVERIFIED |
| PHPine Hill Ind Park | Carlisle | PA | — | ◇ UNVERIFIED |
| PPPioneer Printing-pioneer Printing | Saint Louis | MO | — | ◇ UNVERIFIED |
| PMPlant Maintenance Service Corporation | Memphis | TN | — | ◇ UNVERIFIED |
| PBPlouffe's Boiler and Mechanical Service INC. | Middlebury | VT | — | ◇ UNVERIFIED |
| PIPoppe INC. | Hickory | NC | — | ◇ UNVERIFIED |
| PTPorter Tire Center INC | Olive Hill | KY | — | ◇ UNVERIFIED |
| PEPowerhouse Equipment | Gastonia | NC | — | ◇ UNVERIFIED |
| PPPower Products and Engineering, LLC | Trenton | NJ | — | ◇ UNVERIFIED |
| PBPrecision Blend Gases, INC. | Dickinson | TX | — | ◇ UNVERIFIED |
| PDPrecision Dies by Koehler LLC | Louisville | KY | — | ◇ UNVERIFIED |
| PMPrecision Micro Components | Redwood City | CA | — | ◇ UNVERIFIED |
| PAPrimetest Automation, INC. | Ft. Lauderdale | FL | — | ◇ UNVERIFIED |
| PCPro Coat Powder Coating | Lake Elsinore | CA | — | ◇ UNVERIFIED |
| PPProduction Pattern Shop INC | Oakland | CA | — | ◇ UNVERIFIED |
| PIPro-Mation, Inc. | Kenosha | WI | — | ◇ UNVERIFIED |
| QAQuality Assured Controls, INC. | Augusta | GA | — | ◇ UNVERIFIED |
| QMQualtek Mfg., INC. (was Minco & Maxcor) | Colorado Springs | CO | — | ◇ UNVERIFIED |
| RIRad-Con Inc | Lakewood | OH | — | ◇ UNVERIFIED |
| RTRagan Technologies INC | San Diego | CA | — | ◇ UNVERIFIED |
| RSReliant Specialty Equipment Corporation | Montgomery | AL | — | ◇ UNVERIFIED |
| RBRentech Boiler Services INC | Abilene | TX | — | ◇ UNVERIFIED |
| RMRestoration Management Company | Lake Elsinore | CA | — | ◇ UNVERIFIED |
| RCRichardson Cooling Packages, LLC | New Castle | PA | — | ◇ UNVERIFIED |
| RPRiley Power INC | Gallatin | TN | — | ◇ UNVERIFIED |
| RPRiley Power INC | Worcester | MA | — | ◇ UNVERIFIED |
| RERite Engineering & Mfg CORP | Downey | CA | — | ◇ UNVERIFIED |
| RRR.J.R. Radiator, Inc. | Cincinnati | OH | — | ◇ UNVERIFIED |
| RIRnk Industries, INC | Los Angeles | CA | — | ◇ UNVERIFIED |
| RTRocore Thermal Systems LLC | Burkesville | KY | — | ◇ UNVERIFIED |
| RRotoflow | Bethlehem | PA | — | ◇ UNVERIFIED |
| RCRp/presidio Central Campus Own | Santa Clara | CA | — | ◇ UNVERIFIED |
| SRSamberg Rod and Custom | Martinez | CA | — | ◇ UNVERIFIED |
| SFSamples Fab and Industrial Services LLC | Wills Point | TX | — | ◇ UNVERIFIED |
| SSSanmina - Sci | Newark | CA | — | ◇ UNVERIFIED |
| SMSatellite Manufacturing CO INC | Pomona | CA | — | ◇ UNVERIFIED |
| SIScaltech INC | Rodeo | CA | — | ◇ UNVERIFIED |
| SFSchwabel Fabricating Com INC | Tonawanda | NY | — | ◇ UNVERIFIED |
| SIScorpius Industries LLC | Hesston | KS | — | ◇ UNVERIFIED |
| SPSheco Plant 2 | Tuscaloosa | AL | — | ◇ UNVERIFIED |
| SOSIG OpCo LLC | Sturgis | MI | — | ◇ UNVERIFIED |
| S3Slant 3D LLC | Boise | ID | — | ◇ UNVERIFIED |
| SESmithco Engineering INC | Tulsa | OK | — | ◇ UNVERIFIED |
| SFSmith-sharpe Fire Brick Supply | Minneapolis | MN | — | ◇ UNVERIFIED |
| SASMT Automation LLC | Roseville | MI | — | ◇ UNVERIFIED |
| SSSMT Services, LLC | Bruce Township | MI | — | ◇ UNVERIFIED |
| STSo-semi Technologies Dba Optopax | San Jose | CA | — | ◇ UNVERIFIED |
| SHSouthern Heat Exchanger | Tuscaloosa | AL | — | ◇ UNVERIFIED |
| SLSpadone, LLC | Dresher | PA | — | ◇ UNVERIFIED |
| S2Spamex 2, LLC | Hartford | WI | — | ◇ UNVERIFIED |
| SHSpx Heat Transfer INC. | Tulsa | OK | — | ◇ UNVERIFIED |
| SHSpx Heat Transfer INC / Steel Products Fabrication | Tulsa | OK | — | ◇ UNVERIFIED |
| SGSquare Group, LLC | Chesterfield | MI | — | ◇ UNVERIFIED |
| SESquickmon's Engineering & Automation, L.L.C. | Phoenix | AZ | — | ◇ UNVERIFIED |
| SMStead Motors | Walnut Creek | CA | — | ◇ UNVERIFIED |
| SBSterling Boiler & Mechanical, INC. | Parrish | FL | — | ◇ UNVERIFIED |
| SBSterling Boiler & Mechanical, INC. | Gallatin | TN | — | ◇ UNVERIFIED |
| SIStolberger INC. Dba Wardwell Braiding CO. | Central Falls | RI | — | ◇ UNVERIFIED |
| SLStraight Line Steering | San Jose | CA | — | ◇ UNVERIFIED |
| SIStrasbaugh, INC | San Luis Obispo | CA | — | ◇ UNVERIFIED |
| SIStratasys INC | Eden Prairie | MN | — | ◇ UNVERIFIED |
| SPSumi Printing and Binding Ic. | Carson | CA | — | ◇ UNVERIFIED |
| SCSunchemical Corporation - Concord Facility | Concord | CA | — | ◇ UNVERIFIED |
| SCSuperior Controls, LLC Dba Redviking | Plymouth | MI | — | ◇ UNVERIFIED |
| SHSuperior Holding INC | Hutchinson | KS | — | ◇ UNVERIFIED |
 Swanson Industries, INC | Madisonville | KY | — | ◇ UNVERIFIED |
| SISweco Icc | Florence | KY | — | ◇ UNVERIFIED |
| STSwenson Technology INC | Harvey | IL | — | ◇ UNVERIFIED |
| SASwissqprint America | Irvine | CA | — | ◇ UNVERIFIED |
| TCTank Construction & Engineering INC | Fresno | CA | — | ◇ UNVERIFIED |
| TCTechnotherm CORP. | Tulsa | OK | — | ◇ UNVERIFIED |
| TETed's Electric | Chico | CA | — | ◇ UNVERIFIED |
| TCTei Construction Services, INC. | Royersford | PA | — | ◇ UNVERIFIED |
| TLTerex Light Contruction | Rock Hill | SC | — | ◇ UNVERIFIED |
| TTerrill's | Chico | CA | — | ◇ UNVERIFIED |
| TGThe G2 Group LLC | Coventry | RI | — | ◇ UNVERIFIED |
 Thermal Engineering International (usa), INC. a Subsidary of Babcock Power | Sapulpa | OK | — | ◇ UNVERIFIED |
| TLThermamasters, LLC. | Wetumpka | AL | — | ◇ UNVERIFIED |
| TCThermasys Corporation | Iron Ridge | WI | — | ◇ UNVERIFIED |
| TYThe Yurko Group LLC | Louisville | KY | — | ◇ UNVERIFIED |
| TRT.J's Rocks LLC | Morgantown | PA | — | ◇ UNVERIFIED |
| TSTriple S & P, INC. | Duette | FL | — | ◇ UNVERIFIED |
| TSTru Sheet Metal, INC. | Ronkonkoma | NY | — | ◇ UNVERIFIED |
| TTTubular Textile Machinery, INC. | Lexington | NC | — | ◇ UNVERIFIED |
| TCTuftco Corporation | Chattanooga | TN | — | ◇ UNVERIFIED |
| THTulsa Heaters, INC. | Tulsa | OK | — | ◇ UNVERIFIED |
| T3Turbo 3d LLC Dba Fugo | Gardena | CA | — | ◇ UNVERIFIED |
| TPTurbotec Products INC. | Windsor | CT | — | ◇ UNVERIFIED |
| TTTyco Thermal Controls | Menlo Park | CA | — | ◇ UNVERIFIED |
| UAUltratech a Division of Veeco | San Jose | CA | — | ◇ UNVERIFIED |
| UIUltratech, INC | San Jose | CA | — | ◇ UNVERIFIED |
| UCUnifin Chesapeake | Chesapeake | VA | — | ◇ UNVERIFIED |
| UDUniversal Dynamics | Woodbridge | VA | — | ◇ UNVERIFIED |
| UAUS Army Garrison West Point | West Point | NY | — | ◇ UNVERIFIED |
| UAUss Annapolis - Cal. Marine | San Diego | CA | — | ◇ UNVERIFIED |
| UIUzelac Industrial Properties, LLC | Pewaukee | WI | — | ◇ UNVERIFIED |
