| HRHardy Road Location | Spring | TX | — | ◇ UNVERIFIED |
| HMHarley-davidson Motor Co- Industrial Park Facility | Tomahawk | WI | — | ◇ UNVERIFIED |
| HWHarold Wood CO | Buffalo | NY | — | ◇ UNVERIFIED |
| HTHarper Thiel | Wilmington | DE | — | ◇ UNVERIFIED |
| HEHarrison Engine Service, INC. | La Porte | IN | — | ◇ UNVERIFIED |
| HMHarrison Machine Co/wesleyville Plt | Erie | PA | — | ◇ UNVERIFIED |
| HAHarrys Automotive Service | Stratford | NJ | — | ◇ UNVERIFIED |
| HTHarsco Track Technologies | Fairmont | MN | — | ◇ UNVERIFIED |
| HAHartchrom at the Watervliet Arsenal | Watervliet | NY | — | ◇ UNVERIFIED |
| HCHart Chrome & Restoration | Carrollton | GA | — | ◇ UNVERIFIED |
| HCHart & Cooley INC | Holland | MI | — | ◇ UNVERIFIED |
| HCHart & Cooley INC | Tucson | AZ | — | ◇ UNVERIFIED |
| HSHartford Standard CORP | Hartford | KY | — | ◇ UNVERIFIED |
| HMHartzell Mfg CO INC (0857092018) | Miamisburg | OH | — | ◇ UNVERIFIED |
| HIHarwood Industries INC | Tyler | TX | — | ◇ UNVERIFIED |
| HSHassay Savage | Turners Falls | MA | — | ◇ UNVERIFIED |
| HWHasse & Wrede North America | North Aurora | IL | — | ◇ UNVERIFIED |
| HPHatteras Pools | Cameron | SC | — | ◇ UNVERIFIED |
| HPHawaii Plating | Honolulu | HI | — | ◇ UNVERIFIED |
| HCHawkeyepedershaab Concrete Technologies, INC | Mediapolis | IA | — | ◇ UNVERIFIED |
| HMHawkins Machine Shop INC | Troy | OH | — | ◇ UNVERIFIED |
| HTHayashi Telempu NA | Jasper | AL | — | ◇ UNVERIFIED |
| HLHayes Lemmerz International INC | Howell | MI | — | ◇ UNVERIFIED |
| HIHbf Investments, LLC | Humboldt (historical) | IA | — | ◇ UNVERIFIED |
| HEHbm Electrochemical CO | Lansing | IL | — | ◇ UNVERIFIED |
| HRHcma Rhq | Newnan | GA | — | ◇ UNVERIFIED |
| HMHead Manufacturing INC | South Elgin | IL | — | ◇ UNVERIFIED |
| HAHealy Awards INC | Menomonee Falls | WI | — | ◇ UNVERIFIED |
| HPHearn Plating CO INC | Toledo | OH | — | ◇ UNVERIFIED |
| HAHeartland Automotive LLC | Lafayette | IN | — | ◇ UNVERIFIED |
| HOHeart of Dixie Machine & Fab | Talladega | AL | — | ◇ UNVERIFIED |
| HFHeat Fab INC | Turners Falls | MA | — | ◇ UNVERIFIED |
| HFHebert Foundry & Machine | Laconia | NH | — | ◇ UNVERIFIED |
| HMHeckethorn Manufacturing | Dyersburg | TN | — | ◇ UNVERIFIED |
| HLHeggem Lundquist | Denver | CO | — | ◇ UNVERIFIED |
| HUHeiche US Surface Technology INC | Spartanburg | SC | — | ◇ UNVERIFIED |
| HIHelgesen Industries INC | Hartford | WI | — | ◇ UNVERIFIED |
| HSHelical Solutions LLC | Gorham | ME | — | ◇ UNVERIFIED |
| HEHelwig Enterprises INC. | Shandon | OH | — | ◇ UNVERIFIED |
 Hendrick Manufacturing CO | Carbondale | PA | — | ◇ UNVERIFIED |
| HPHenefelt Precision Products, INC | Largo | FL | — | ◇ UNVERIFIED |
| HPHenry Plastic Molding | Fremont | CA | — | ◇ UNVERIFIED |
| HMHercules Machinery Corporation | Fort Wayne | IN | — | ◇ UNVERIFIED |
| HPHercules Polishing and Plating LLC | Canton | OH | — | ◇ UNVERIFIED |
| HTHercules Tool & Die LLC | Warren | MI | — | ◇ UNVERIFIED |
| HCHerr-voss Corporation-office Basement | Callery | PA | — | ◇ UNVERIFIED |
| HVHerr Voss Stamco Rci | New Ross | IN | — | ◇ UNVERIFIED |
| HCHertz Corporation | San Francisco | CA | — | ◇ UNVERIFIED |
| HCHess CO Industries of Arizona INC | Eloy | AZ | — | ◇ UNVERIFIED |
| HSHess Services - Hays (e 9th) | Hays | KS | — | ◇ UNVERIFIED |
| HCHexcel CORP Auburn | Auburn | WA | — | ◇ UNVERIFIED |
| HRHf Rubber Machinery INC | Topeka | KS | — | ◇ UNVERIFIED |
| HAHh Arnold Company INC | Rockland | MA | — | ◇ UNVERIFIED |
| HHH H Howard CORP | Chicago | IL | — | ◇ UNVERIFIED |
| HPHialeah Plating Shop INC | Hialeah | FL | — | ◇ UNVERIFIED |
| HCHi Cone Division of Itw | Zebulon | NC | — | ◇ UNVERIFIED |
| HCHi Craft Metal Products | Gardena | CA | — | ◇ UNVERIFIED |
| HMHighland Machine | Oak Hill | WV | — | ◇ UNVERIFIED |
| HMHighland Machine and Screw Product CO | Highland | IL | — | ◇ UNVERIFIED |
| HPHighland Precision Plating INC | Hillsboro | OH | — | ◇ UNVERIFIED |
| HTHighland Threads | Houston | TX | — | ◇ UNVERIFIED |
| HPHigh Purity Technology | Poughkeepsie | NY | — | ◇ UNVERIFIED |
| HTHigh Tech Asemblies | Lowell | MA | — | ◇ UNVERIFIED |
| HTHigh Tech Finishing | Houston | TX | — | ◇ UNVERIFIED |
| HTHilco Technologies | Armada | MI | — | ◇ UNVERIFIED |
| HCHill Cross Co., INC. | West New York | NJ | — | ◇ UNVERIFIED |
| HPHill Plating Incorporated | Springfield | MO | — | ◇ UNVERIFIED |
| HIHilton Intl Industries INC | Sarasota | FL | — | ◇ UNVERIFIED |
| HMHino Motors Manufacturing U.s.a., INC. | Ontario | CA | — | ◇ UNVERIFIED |
| HHHired Hand Green | Bremen | AL | — | ◇ UNVERIFIED |
| HFHirsh Finishes, Dba Best Finishes, LLC | Colorado Springs | CO | — | ◇ UNVERIFIED |
| HIH I S Painting INC | Titusville | FL | — | ◇ UNVERIFIED |
| HMHitachi Magnetics CORP | Edmore | MI | — | ◇ UNVERIFIED |
| HMHitech Metal Fabrication | Anaheim | CA | — | ◇ UNVERIFIED |
| HMHi-tech Metals | Denton | TX | — | ◇ UNVERIFIED |
| HPHi-tech Plating | Erie | PA | — | ◇ UNVERIFIED |
| HTHi Tecmetal, INC. Bmt (1318007817) | Cleveland | OH | — | ◇ UNVERIFIED |
| HTHi - Tec Plating INC | Statesville | NC | — | ◇ UNVERIFIED |
| HFHl Fisher Mfg CO INC | Des Plaines | IL | — | ◇ UNVERIFIED |
| HLH Loeb Corporation | New Bedford | MA | — | ◇ UNVERIFIED |
| HLH & L Tool-madison Hgts | Madison Heights | MI | — | ◇ UNVERIFIED |
| HDHm Dunn | Euless | TX | — | ◇ UNVERIFIED |
| HGHme Global LLC - Fusionone | New Iberia | LA | — | ◇ UNVERIFIED |
| HQHm Quackenbush INC | Herkimer | NY | — | ◇ UNVERIFIED |
| HCHmw Contracting LLC | Detroit | MI | — | ◇ UNVERIFIED |
| HLHn Lucas & Son | Delran Twp | NJ | — | ◇ UNVERIFIED |
| HPHobart Plant #56 | Richmond Hill | GA | — | ◇ UNVERIFIED |
| HCHoerbiger Corporation of America, INC | Coral Springs | FL | — | ◇ UNVERIFIED |
| HPHoffer Plastics | South Elgin | IL | — | ◇ UNVERIFIED |
| HEHoffman Enclosure Dba Pentair Equipment Protection | Anoka | MN | — | ◇ UNVERIFIED |
| HNHoffman New Yorker/dushore Facility | Dushore | PA | — | ◇ UNVERIFIED |
| HIHolcim (us) INC | Des Moines | IA | — | ◇ UNVERIFIED |
| HNHolland Nameplate | North Kansas City | MO | — | ◇ UNVERIFIED |
| HPHolley Performance | Bowling Green | KY | — | ◇ UNVERIFIED |
| HIHolly Industries INC | Hornick | IA | — | ◇ UNVERIFIED |
| HSHolly Springs Plastics LLC | Holly Springs | MS | — | ◇ UNVERIFIED |
| HMHol Mac Corporation, South | Bay Springs | MS | — | ◇ UNVERIFIED |
| HHomalite | New Castle | DE | — | ◇ UNVERIFIED |
| HVHomeland Vinyl Products | Pinson | AL | — | ◇ UNVERIFIED |
| HVHomeland Vinyl Products, INC. | Ogden | UT | — | ◇ UNVERIFIED |
