| GTGooch Thermal Manufacturing, INC. | Fogelsville | PA | Fabricated Metal Product Manufacturing332410 | — | ◇ UNVERIFIED |
| GFGratton Fabricating & Welding, INC. | Adamsburg | PA | Fabricated Metal Product Manufacturing332410 | — | ◇ UNVERIFIED |
| HTHeat Transfer Equipment CO. | Tulsa | OK | Fabricated Metal Product Manufacturing332410 | — | ◇ UNVERIFIED |
| HCHydac Cooling Systems (denver, Nc) | Denver | NC | Fabricated Metal Product Manufacturing332410 | — | ◇ UNVERIFIED |
| HIHydrodyne, INC. | Massillon | OH | Fabricated Metal Product Manufacturing332410 | — | ◇ UNVERIFIED |
| IIIsotherm, INC. | Arlington | TX | Fabricated Metal Product Manufacturing332410 | — | ◇ UNVERIFIED |
| KKelvion (cimarron) | Catoosa | OK | Fabricated Metal Product Manufacturing332410 | — | ◇ UNVERIFIED |
| KKelvion (keystone) | Catoosa | OK | Fabricated Metal Product Manufacturing332410 | — | ◇ UNVERIFIED |
| LRLam Research, Balazs | Fremont | CA | Fabricated Metal Product Manufacturing332410 | — | ◇ UNVERIFIED |
| LRLkq Roseville (heatex Radiator Manufacturing Plant) | Roseville | MI | Fabricated Metal Product Manufacturing332410 | — | ◇ UNVERIFIED |
| LLL & L Industries, INC. | White | GA | Fabricated Metal Product Manufacturing332410 | — | ◇ UNVERIFIED |
| MWMary Wells Junior High School | Southbridge | MA | Fabricated Metal Product Manufacturing332410 | — | ◇ UNVERIFIED |
| MKMc Kenna Boiler Wks INC | Los Angeles | CA | Fabricated Metal Product Manufacturing332410 | — | ◇ UNVERIFIED |
| MBMercedes Benz of Walnut Creek | Walnut Creek | CA | Fabricated Metal Product Manufacturing332410 | — | ◇ UNVERIFIED |
| MCMicro Cooling Concepts, INC. | Huntington Beach | CA | Fabricated Metal Product Manufacturing332410 | — | ◇ UNVERIFIED |
| MTModine Transferencia De Calor Sa De Cv | Laredo | TX | Fabricated Metal Product Manufacturing332410 | — | ◇ UNVERIFIED |
| MPMonolithic Power Systems INC | San Jose | CA | Fabricated Metal Product Manufacturing332410 | — | ◇ UNVERIFIED |
| MMMoorehead Machinery and Boiler Company | Wheatland | WY | Fabricated Metal Product Manufacturing332410 | — | ◇ UNVERIFIED |
| MSMotiv Space Systems | Pasadena | CA | Fabricated Metal Product Manufacturing332410 | — | ◇ UNVERIFIED |
| MIMunroe, INC. | Ringgold | GA | Fabricated Metal Product Manufacturing332410 | — | ◇ UNVERIFIED |
| MIMunroe, INC. | Ambridge | PA | Fabricated Metal Product Manufacturing332410 | — | ◇ UNVERIFIED |
| MCMunters Corporation | Natural Bridge Station | VA | Fabricated Metal Product Manufacturing332410 | — | ◇ UNVERIFIED |
| MVMustang Vacuum Systems | Sarasota | FL | Fabricated Metal Product Manufacturing332410 | — | ◇ UNVERIFIED |
| NBNational Boiler Service, INC. | Panama City | FL | Fabricated Metal Product Manufacturing332410 | — | ◇ UNVERIFIED |
| NBNational Boiler Service, INC. | Queen City | TX | Fabricated Metal Product Manufacturing332410 | — | ◇ UNVERIFIED |
| NBNational Boiler Services INC. | Covington | VA | Fabricated Metal Product Manufacturing332410 | — | ◇ UNVERIFIED |
| PDParamount Duct and Vent Cleaning LCC | Red Lodge | MT | Fabricated Metal Product Manufacturing332410 | — | ◇ UNVERIFIED |
| PBParker Boiler CO. | Commerce | CA | Fabricated Metal Product Manufacturing332410 | — | ◇ UNVERIFIED |
| PBPlouffe's Boiler and Mechanical Service INC. | Middlebury | VT | Fabricated Metal Product Manufacturing332410 | — | ◇ UNVERIFIED |
| PPPower Products and Engineering, LLC | Trenton | NJ | Fabricated Metal Product Manufacturing332410 | — | ◇ UNVERIFIED |
| PBPrecision Blend Gases, INC. | Dickinson | TX | Fabricated Metal Product Manufacturing332410 | — | ◇ UNVERIFIED |
| PMPrecision Micro Components | Redwood City | CA | Fabricated Metal Product Manufacturing332410 | — | ◇ UNVERIFIED |
| RBRentech Boiler Services INC | Abilene | TX | Fabricated Metal Product Manufacturing332410 | — | ◇ UNVERIFIED |
| RCRichardson Cooling Packages, LLC | New Castle | PA | Fabricated Metal Product Manufacturing332410 | — | ◇ UNVERIFIED |
| RPRiley Power INC | Gallatin | TN | Fabricated Metal Product Manufacturing332410 | — | ◇ UNVERIFIED |
| RERite Engineering & Mfg CORP | Downey | CA | Fabricated Metal Product Manufacturing332410 | — | ◇ UNVERIFIED |
| RRR.J.R. Radiator, Inc. | Cincinnati | OH | Fabricated Metal Product Manufacturing332410 | — | ◇ UNVERIFIED |
| SSSanmina - Sci | Newark | CA | Fabricated Metal Product Manufacturing332410 | — | ◇ UNVERIFIED |
| STSo-semi Technologies Dba Optopax | San Jose | CA | Fabricated Metal Product Manufacturing332410 | — | ◇ UNVERIFIED |
| S2Spamex 2, LLC | Hartford | WI | Fabricated Metal Product Manufacturing332410 | — | ◇ UNVERIFIED |
| SHSpx Heat Transfer INC. | Tulsa | OK | Fabricated Metal Product Manufacturing332410 | — | ◇ UNVERIFIED |
| SBSterling Boiler & Mechanical, INC. | Parrish | FL | Fabricated Metal Product Manufacturing332410 | — | ◇ UNVERIFIED |
| SHSuperior Holding INC | Hutchinson | KS | Fabricated Metal Product Manufacturing332410 | — | ◇ UNVERIFIED |
| TCTank Construction & Engineering INC | Fresno | CA | Fabricated Metal Product Manufacturing332410 | — | ◇ UNVERIFIED |
| TCTechnotherm CORP. | Tulsa | OK | Fabricated Metal Product Manufacturing332410 | — | ◇ UNVERIFIED |
| TCTei Construction Services, INC. | Royersford | PA | Fabricated Metal Product Manufacturing332410 | — | ◇ UNVERIFIED |
 Thermal Engineering International (usa), INC. a Subsidary of Babcock Power | Sapulpa | OK | Fabricated Metal Product Manufacturing332410 | — | ◇ UNVERIFIED |
| TLThermamasters, LLC. | Wetumpka | AL | Fabricated Metal Product Manufacturing332410 | — | ◇ UNVERIFIED |
| TCThermasys Corporation | Iron Ridge | WI | Fabricated Metal Product Manufacturing332410 | — | ◇ UNVERIFIED |
| TSTriple S & P, INC. | Duette | FL | Fabricated Metal Product Manufacturing332410 | — | ◇ UNVERIFIED |
