| IIIlco Industries | Rancho Dominguez | CA | — | ◇ UNVERIFIED |
| ITIllinois Tool Works INC | Bakersfield | CA | — | ◇ UNVERIFIED |
| ITIllinois Tool Works, INC. | Tucson | AZ | — | ◇ UNVERIFIED |
| IIIlten's INC. | Cedar Rapids | IA | — | ◇ UNVERIFIED |
| IIImax Industries, INC | Painesville | OH | — | ◇ UNVERIFIED |
| IIImmec, INC. | Social Circle | GA | — | ◇ UNVERIFIED |
| IEImpact Employment INC | Salt Lake City | UT | — | ◇ UNVERIFIED |
| IHImpakt Holdings LLC Dba Dmp | Burlingame | CA | — | ◇ UNVERIFIED |
| ICImperial Cal Products | Brea | CA | — | ◇ UNVERIFIED |
| IFImperial Fabricating INC. (closed) | Madison | TN | — | ◇ UNVERIFIED |
| IGImperial Group, Mfg, INC. | Decatur | TX | — | ◇ UNVERIFIED |
| IMImperial Manufacturing Group USA INC. | Alton | IL | — | ◇ UNVERIFIED |
| IAImpulse Air, INC | Jacksonville | FL | — | ◇ UNVERIFIED |
| IAIms Acquisition, LLC. | Tucson | AZ | — | ◇ UNVERIFIED |
| IAIncast Asset Mgt. | West Sacramento | CA | — | ◇ UNVERIFIED |
| IIIncom, INC. | Kailua Kona | HI | — | ◇ UNVERIFIED |
| ICIn Control, INC. | Newnan | GA | — | ◇ UNVERIFIED |
| IAIncred a Bull Products, Ltd. Co. | Richmond | KY | — | ◇ UNVERIFIED |
| IAIncred A Bull Products, Ltd. Co. | Richmond | KY | — | ◇ UNVERIFIED |
| ISIndependent Steel LLC | Manassas | VA | — | ◇ UNVERIFIED |
| IMIndiana Model Company Incorporated - Plant 1 | Indianapolis | IN | — | ◇ UNVERIFIED |
| IMIndiana Model Company Incorporated - Plant 2 | Indianapolis | IN | — | ◇ UNVERIFIED |
| ISIndiana Steel and Engineering Corporation | Bedford | IN | — | ◇ UNVERIFIED |
| IRIndian River All-fab, INC. | Vero Beach | FL | — | ◇ UNVERIFIED |
| ICIndustrial Contractors | Evansville | IN | — | ◇ UNVERIFIED |
| IDIndustrial Design & Fabrication INC | Mcewen | TN | — | ◇ UNVERIFIED |
| IDIndustrial Design Fabrication & Installation, INC. | Sioux City | IA | — | ◇ UNVERIFIED |
| IFIndustrial Fabrication Services INC | Lake Crystal | MN | — | ◇ UNVERIFIED |
| IFIndustrial Fabrication Services INC | Lake Crystal | MN | — | ◇ UNVERIFIED |
| IFIndustrial Fabrication Services, LLC | Sand Springs | OK | — | ◇ UNVERIFIED |
| IFIndustrial Fabricators | Gastonia | NC | — | ◇ UNVERIFIED |
| IFIndustrial Fabricators INC. | Gastonia | NC | — | ◇ UNVERIFIED |
| IFIndustrial Fabricators, INC. | Gastonia | NC | — | ◇ UNVERIFIED |
| IFIndustrial Fabricators, INC - Vc Plant | Gastonia | NC | — | ◇ UNVERIFIED |
| IFIndustrial Fabricators of Virgina INC | Verona | VA | — | ◇ UNVERIFIED |
| IFIndustrial Fabricators of Virginia INC | Fishersville | VA | — | ◇ UNVERIFIED |
| IHIndustrial Hardfacing, Inc | Lamoni | IA | — | ◇ UNVERIFIED |
| IHIndustrial Holdings of Tampa LLC | Tampa | FL | — | ◇ UNVERIFIED |
| IMIndustrial Machine & Mfg CO | South El Monte | CA | — | ◇ UNVERIFIED |
| IMIndustrial Manufacturing and Installations, Inc | Sedalia | CO | — | ◇ UNVERIFIED |
| IMIndustrial Mechanical, INC. | Hartwell | GA | — | ◇ UNVERIFIED |
| IMIndustrial Metal Craft, INC. | Gastonia | NC | — | ◇ UNVERIFIED |
| IMIndustrial Metal Enterprises, LLC | Idaho Falls | ID | — | ◇ UNVERIFIED |
| IMIndustrial Metal Fabricators | Marine City | MI | — | ◇ UNVERIFIED |
| IMIndustrial Metal Products of Arberdeen, INC | Aberdeen | NC | — | ◇ UNVERIFIED |
| IPIndustrial Pipe Fittings LLC Dba Plasson USA | Corsicana | TX | — | ◇ UNVERIFIED |
| IPIndustrial Piping Corporation | Staunton | VA | — | ◇ UNVERIFIED |
| IPIndustrial Piping Corporation | Staunton | VA | — | ◇ UNVERIFIED |
| IPIndustrial Plating & Machine, INC. | Bluefield | WV | — | ◇ UNVERIFIED |
| IPIndustrial Precision Coatings INC | Randolph | MA | — | ◇ UNVERIFIED |
