| AWAmerican Warming and Ventilating a Division of Mestek | Bradner | OH | — | ◇ UNVERIFIED |
| ABAmerimax Building Products | Romoland | CA | — | ◇ UNVERIFIED |
| ABAmerimax Building Products | Nappanee | IN | — | ◇ UNVERIFIED |
| AHAmerimax Home Products | Sacramento | CA | — | ◇ UNVERIFIED |
| AMAmeritex Machine and Fab LLC | Willis | TX | — | ◇ UNVERIFIED |
| APAmerson Precision Sheet Metal INC | Mcminnville | OR | — | ◇ UNVERIFIED |
| AAAmf Anaheim LLC | Anaheim | CA | — | ◇ UNVERIFIED |
| ALAms Lv, LLC | Las Vegas | NV | — | ◇ UNVERIFIED |
| AIAndlex INC Dba Southland Fabrication | Fallbrook | CA | — | ◇ UNVERIFIED |
| AHAndritz Herr Voss Stamco Incorporated | Chesterton | IN | — | ◇ UNVERIFIED |
| ASAndrus Sheet Metal, INC. | Richmond | CA | — | ◇ UNVERIFIED |
| AIAnemostat Inc/scranton Plt | Scranton | PA | — | ◇ UNVERIFIED |
| APAnoroc Precision Sheet Metal | Rosewood | CA | — | ◇ UNVERIFIED |
| AMAntarctic Mechanical Services, INC. Dba Ams Mechanical Systems | Evanston | IL | — | ◇ UNVERIFIED |
| AMAo Manufacturing, LLC | Conroe | TX | — | ◇ UNVERIFIED |
| AIApex Industries INC | Spokane Valley | WA | — | ◇ UNVERIFIED |
| AHApi Heat Transfer INC | Arcade | NY | — | ◇ UNVERIFIED |
| AOA.p.i. of N.h. | Manchester | NH | — | ◇ UNVERIFIED |
| ASAppleton Supply CO | Appleton | WI | — | ◇ UNVERIFIED |
| ALApplied Laser Technologies LLC | Schofield | WI | — | ◇ UNVERIFIED |
| ALApplied Laser Technologies LLC | Schofield | WI | — | ◇ UNVERIFIED |
| AMApplied Materials INC | Milpitas | CA | — | ◇ UNVERIFIED |
| AMApplied Materials, INC. | Santa Clara | CA | — | ◇ UNVERIFIED |
| AMApplied Materials, INC. | Sunnyvale | CA | — | ◇ UNVERIFIED |
| AMApplied Materials, INC. | Santa Clara | CA | — | ◇ UNVERIFIED |
| AMApplied Materials, Inc, Centra | Santa Clara | CA | — | ◇ UNVERIFIED |
| AMApplied Material Technologies INC Dba Fabcor Precision Sheet Metal Fab | Fountain Valley | CA | — | ◇ UNVERIFIED |
| AApw | Anaheim | CA | — | ◇ UNVERIFIED |
| AEApw Erie/erie | Erie | PA | — | ◇ UNVERIFIED |
| AMApw Mayville LLC | Creedmoor | NC | — | ◇ UNVERIFIED |
| ALAqua Logic, INC. | Monroe | NC | — | ◇ UNVERIFIED |
| APArchers Precision INC | Tigard | OR | — | ◇ UNVERIFIED |
| ASArchibald Sheet Metal, Inc. | Lakeside | CA | — | ◇ UNVERIFIED |
| ACArchitectural Construction Services INC | Minneapolis | MN | — | ◇ UNVERIFIED |
| ADArchitectural Design Concepts | Springfield | MO | — | ◇ UNVERIFIED |
| AFArchitectural Fabrications INC | Auburn | WA | — | ◇ UNVERIFIED |
| AIArchitectural & Industrial Metal Fabrication | Roswell | GA | — | ◇ UNVERIFIED |
| AMArchitectural Metal Works INC | Turner | OR | — | ◇ UNVERIFIED |
| ASArchitectural Sheet Metal & Panels, INC. | Cheyenne | WY | — | ◇ UNVERIFIED |
| ASArchitectural Sheetmetal Products, INC. | Scotia | NY | — | ◇ UNVERIFIED |
| ASArchitectural Sheet Metal Systems, INC. | Bridgeton | MO | — | ◇ UNVERIFIED |
| AMArco Metals, INC | Baltimore | MD | — | ◇ UNVERIFIED |
| ASArjae Sheet Metal CO INC | Happy Valley | OR | — | ◇ UNVERIFIED |
| AMArmadillo Metalworks, INC. | Passaic | NJ | — | ◇ UNVERIFIED |
| AMArmi Manufacturing | Fayetteville | AR | — | ◇ UNVERIFIED |
| APArmorcast Prod. CO | North Hollywood | CA | — | ◇ UNVERIFIED |
| APArmorcast Products Company | North Hollywood | CA | — | ◇ UNVERIFIED |
| APArmstrong Power Systems, LLC | Miami | FL | — | ◇ UNVERIFIED |
| ACArning Companies INC | Cassville | MO | — | ◇ UNVERIFIED |
| AIArning Industries, INC. | Metairie | LA | — | ◇ UNVERIFIED |
| ACArrow Components CORP | Ramsey | MN | — | ◇ UNVERIFIED |
 Arrowhead Products INC | Hopkins | MN | — | ◇ UNVERIFIED |
| AHArrow Heating Company | Tualatin | OR | — | ◇ UNVERIFIED |
| AFArtisan Fabrication LLC | Strafford | MO | — | ◇ UNVERIFIED |
| AMArtis Metals Co., INC. | Boise | ID | — | ◇ UNVERIFIED |
| AWArtistic Welding INC | Gardena | CA | — | ◇ UNVERIFIED |
| AJArt Jupiter LLC | Jupiter | FL | — | ◇ UNVERIFIED |
| ATArvite Technologies, INC. | Erie | PA | — | ◇ UNVERIFIED |
| ANASAP Now, LLC | Dallas | GA | — | ◇ UNVERIFIED |
| ASA.s.a.p. Sheet Metal, INC. | Metairie | LA | — | ◇ UNVERIFIED |
| AAsm | East Palo Alto | CA | — | ◇ UNVERIFIED |
| APAsn Products LLC | Eugene | OR | — | ◇ UNVERIFIED |
| AMAson Metal Products INC | Los Angeles | CA | — | ◇ UNVERIFIED |
| ASAtech - S.e.h. Metal Fabricators, INC. | Buffalo | NY | — | ◇ UNVERIFIED |
| AIAtlantic Industrial Finishing INC | Creedmoor | NC | — | ◇ UNVERIFIED |
| APAtlantic Precision Sheet Metal LLC | Clinton | MA | — | ◇ UNVERIFIED |
| AAAtlas Adhan Industries | Chippewa Falls | WI | — | ◇ UNVERIFIED |
| AMAtlas Manufacturing Div of Meribel | Minneapolis | MN | — | ◇ UNVERIFIED |
| AAAtomic Architectural Metal INC | Vadnais Heights | MN | — | ◇ UNVERIFIED |
| ATA & T Sheet Metal | Bountiful | UT | — | ◇ UNVERIFIED |
| ATAuburn Tank & Manufacturing Co., INC. | Auburn | NY | — | ◇ UNVERIFIED |
| APAurora Precison Metals, INC. | Ocala | FL | — | ◇ UNVERIFIED |
| AMAutomated Manufacturing Solutions, INC. | Winder | GA | — | ◇ UNVERIFIED |
| AUAwningtec USA Incorporated | Corydon | IN | — | ◇ UNVERIFIED |
| AMA-z Manufacturing and Sales Company, Incorporated | Blue Springs | MO | — | ◇ UNVERIFIED |
| BWBabcock & Wilcox | Copley | OH | — | ◇ UNVERIFIED |
| BSBace Services | Jacksonville | FL | — | ◇ UNVERIFIED |
| BSBallard Sheet Metal Wks INC | Seattle | WA | — | ◇ UNVERIFIED |
| BAB and G Service | Cle Elum | WA | — | ◇ UNVERIFIED |
| BMBarrington Manufacturing | El Dorado Springs | MO | — | ◇ UNVERIFIED |
| BBBarry Berndt | Fortson | GA | — | ◇ UNVERIFIED |
| BAB a S Precision Sheet Metal | Morgan Hill | CA | — | ◇ UNVERIFIED |
| BSBauer Sheet Metal & Fabricating, INC | Fruitport | MI | — | ◇ UNVERIFIED |
| BRBautista Reo Pr CORP 205 Avenida Laurel | Bayamon | PR | — | ◇ UNVERIFIED |
| BMBay Mechanical Incorporated | Virginia Beach | VA | — | ◇ UNVERIFIED |
| BSBayou Sheet Metal Services, LLC | Houma | LA | — | ◇ UNVERIFIED |
| BBB & B Insulation CO INC | Houston | TX | — | ◇ UNVERIFIED |
 B&b Manufacturing | Saint Croix | VI | — | ◇ UNVERIFIED |
| BBB & B Sheet Metal | Oklahoma City | OK | — | ◇ UNVERIFIED |
| BIBcc INC | Savannah | MO | — | ◇ UNVERIFIED |
| BMB.c. Mechanical, LLC | Newkirk | OK | — | ◇ UNVERIFIED |
| BSBeacon Sales Acquisition, INC | West Bridgewater | MA | — | ◇ UNVERIFIED |
| BMBegneaud Manufacturing INC | Scott | LA | — | ◇ UNVERIFIED |
| BIBell Intercoolers, LLC | Spring Branch | TX | — | ◇ UNVERIFIED |
| BPBenchmark Precision Products LLC | West Newbury | MA | — | ◇ UNVERIFIED |
| BMBenner Metals Corporation | Fullerton | CA | — | ◇ UNVERIFIED |
| BCBerg Companies | Spokane | WA | — | ◇ UNVERIFIED |
| BBBerger Building Products, INC. | Ivyland | PA | — | ◇ UNVERIFIED |
| BDBernard Dalsin Manufacturing | Farmington | MN | — | ◇ UNVERIFIED |
| BVBerrydale Ventures LLC | Kent | WA | — | ◇ UNVERIFIED |
