| AMA-z Manufacturing and Sales Company, Incorporated | Blue Springs | MO | — | ◇ 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 |
| BLBatesville Logistics | Indianapolis | IN | — | ◇ UNVERIFIED |
| BMBatesville Manufacturing INC | Manchester | TN | — | ◇ UNVERIFIED |
| BMBatesville Manufacturing INC | Nashua | NH | — | ◇ UNVERIFIED |
| BMBatesville Manufacturing Inc, Batesville | Batesville | MS | — | ◇ UNVERIFIED |
| BMBatesville Manufacturing Incorporated | Batesville | IN | — | ◇ UNVERIFIED |
| BMBatesville Manufacturing Inc, Vicksburg | Vicksburg | MS | — | ◇ UNVERIFIED |
| BSBauer Sheet Metal & Fabricating, INC | Fruitport | MI | — | ◇ UNVERIFIED |
| BRBautista Reo Pr CORP 205 Avenida Laurel | Bayamon | PR | — | ◇ UNVERIFIED |
| BWBayard Wilbert Vaults INC. | Bayard | NE | — | ◇ 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 |
| 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 |
| BRBert R Huncilman and Son INC | New Albany | IN | — | ◇ UNVERIFIED |
| BFBest-way Fabricating INC | Saint Joseph | MN | — | ◇ UNVERIFIED |
| BBBetter Bilt Sheet Metal LLC | San Antonio | TX | — | ◇ UNVERIFIED |
| BMBetter Maintenance Sheet Metal CORP. | Newburyport | MA | — | ◇ UNVERIFIED |
| BMB.g. Metals, INC. | San Antonio | TX | — | ◇ UNVERIFIED |
| BTBh Tank Works INC Dba Bh Tank INC | Madera | CA | — | ◇ UNVERIFIED |
| BJB & J, INC. | Sparks | NV | — | ◇ UNVERIFIED |
 Blackman, INC. | New Franken | WI | — | ◇ UNVERIFIED |
| BRBlack Rock Venture LLC | Phoenix | AZ | — | ◇ UNVERIFIED |
| BIBliss Industries INC | Fremont | CA | — | ◇ UNVERIFIED |
| BBBlue Bird Realty LLC | Linden | NJ | — | ◇ UNVERIFIED |
| BDBlue Diamond Sheet Metal, Inc. | Medford | NY | — | ◇ UNVERIFIED |
| BWBlue Water Fabricators INC | Shelby Township | MI | — | ◇ UNVERIFIED |
| BWBlue Wolf Capital Partners LLC Dba Snappy Air Dist | Detroit Lakes | MN | — | ◇ UNVERIFIED |
| BMB & M Metal Works | Catoosa | OK | — | ◇ UNVERIFIED |
| BMBng Management Group, LLC | Macon | GA | — | ◇ UNVERIFIED |
| BNB - N Sheet Metal INC | Wyoming | MN | — | ◇ UNVERIFIED |
| BMBob's Metal Shop LLC | Mesa | AZ | — | ◇ UNVERIFIED |
| BSBohnert Sheet Metal & Roofing CO. | Miami | FL | — | ◇ UNVERIFIED |
| BMBombard Mechanical, LLC | Las Vegas | NV | — | ◇ UNVERIFIED |
| BIBonland Industries, INC. | Philadelphia | PA | — | ◇ UNVERIFIED |
| BPBoss Precision LTD. | Spencerport | NY | — | ◇ UNVERIFIED |
| BCBoyertown Casket CO | Boyertown | PA | — | ◇ UNVERIFIED |
| BMBp Metals LLC | Blaine | MN | — | ◇ UNVERIFIED |
| BIBradford Industries | Bradford | IL | — | ◇ UNVERIFIED |
| BABreidert Air Products Dba Soler & Palau Ventilatio | Jacksonville | FL | — | ◇ UNVERIFIED |
| BEBreshears Enterprises, INC. | Oklahoma City | OK | — | ◇ UNVERIFIED |
| BHBritton Holdings Limited Liability Company | Bloomfield | CT | — | ◇ UNVERIFIED |
| BIBrotech INC. | Payson | UT | — | ◇ UNVERIFIED |
| BSBrown Service Manufacturing Company | Birmingham | AL | — | ◇ UNVERIFIED |
| BWBrown Welding Company | Laurel | MD | — | ◇ UNVERIFIED |
| BDBruce & Dana Wholesale INC | Salem | OR | — | ◇ UNVERIFIED |
| BLBryanAprilbuilding LLC | Ogden | UT | — | ◇ UNVERIFIED |
| BSBryant Sheet Metal, INC. | Hanover | MA | — | ◇ UNVERIFIED |
| BMBtd Manufacturing INC | Detroit Lakes | MN | — | ◇ UNVERIFIED |
| BFBt Fab | Sparks | NV | — | ◇ UNVERIFIED |
| BTB & T Metal Works, INC. | Ocala | FL | — | ◇ UNVERIFIED |
| BOBuffalo Outfront Metalworks, L.p. | Buffalo | NY | — | ◇ UNVERIFIED |
| BMBulling Metal Works, INC. | San Leandro | CA | — | ◇ UNVERIFIED |
| BRBull Run Metal Fabricators & Engineers INC | Clinton | TN | — | ◇ UNVERIFIED |
| BRBull Run Metal, INC. | Manassas | VA | — | ◇ UNVERIFIED |
| BHBw Hvac Operations LLC | Portland | OR | — | ◇ UNVERIFIED |
| CSCabell Sheet Metal and Roofing, INC. | Ceredo | WV | — | ◇ UNVERIFIED |
| CMCabrac Mfg | San Fernando | CA | — | ◇ UNVERIFIED |
| CFCado Fabrications INC | Amesbury | MA | — | ◇ UNVERIFIED |
| CMCalco Metal Works, INC. | Lubbock | TX | — | ◇ UNVERIFIED |
| CSCalcor Space Fac INC | Whittier | CA | — | ◇ UNVERIFIED |
| CMCalhm Metals INC Dba Weld-kraft | Saint Louis Park | MN | — | ◇ UNVERIFIED |
| CACalifornia Air Conveying LLC | Paramount | CA | — | ◇ UNVERIFIED |
| CBCalifornia Business Environments, Inc | Morgan Hill | CA | — | ◇ UNVERIFIED |
| CCCalifornia Chassis INC | Anaheim | CA | — | ◇ UNVERIFIED |
| CFCalifornia Fabrication | Canoga Park | CA | — | ◇ UNVERIFIED |
| CSCalifornia Sheet Metal INC | Sacramento | CA | — | ◇ UNVERIFIED |
| CCCambium Corporation | Athol | MA | — | ◇ UNVERIFIED |
| CICamin Industries INC | Brooklyn | NY | — | ◇ UNVERIFIED |
| CSCampo Sheet Metal Works, INC. | Houston | TX | — | ◇ UNVERIFIED |
| CMCanam Metal Prod | San Bernardino | CA | — | ◇ UNVERIFIED |
| CMCanfield Machine & Tool Div | Kingston | NY | — | ◇ UNVERIFIED |
| CPCanopies Plus, INC. | Eufaula | OK | — | ◇ UNVERIFIED |
| CCCapital City Culvert Corporation | Madison | WI | — | ◇ UNVERIFIED |
| CCaptiveaire | Englewood | OH | — | ◇ UNVERIFIED |
| CCaptiveaire | Redding | CA | — | ◇ UNVERIFIED |
| C3Captiveaire 360 Youngsville Addition | Youngsville | NC | — | ◇ UNVERIFIED |
| CDCarbon Designs | Springdale | AR | — | ◇ UNVERIFIED |
| CSCardinal Sheet Metal INC | Riverside | CA | — | ◇ UNVERIFIED |
| CCCare Caskets Int'l, LLC | Wharton | OH | — | ◇ UNVERIFIED |
| CECare Enterprises, LLC Dba Aubrey Bushelon Funeral | Birmingham | AL | — | ◇ UNVERIFIED |
| CFCarl Fisher Co., INC. | Springfield | MA | — | ◇ UNVERIFIED |
| CRCarpenter's Roofing & Sheet Metal, INC. | West Palm Beach | FL | — | ◇ UNVERIFIED |
