| PBPrecision Bend & Machine CO. | Walcott | — | ◇ UNVERIFIED |
| 1S110 Sj, LLC | Sioux City | — | ◇ UNVERIFIED |
| AIAadg, INC. | Mason City | — | ◇ UNVERIFIED |
| ALAcieta, LLC | Council Bluffs | — | ◇ UNVERIFIED |
| AGAdvance Garage Doors, INC. | Marshalltown | — | ◇ UNVERIFIED |
| AUAfinitas US INC | New Hampton | — | ◇ UNVERIFIED |
| AIAgrequip INC. | Houghton | — | ◇ UNVERIFIED |
| ACAlger Companies, Inc. | Milford | — | ◇ UNVERIFIED |
| AIAllan Industrial Coatings | Allison | — | ◇ UNVERIFIED |
| ASAmbassador Steel Corporation | Newton | — | ◇ UNVERIFIED |
| AHAnderson Heemstra, LLC | Des Moines | — | ◇ UNVERIFIED |
| AWArcosa Wind Towers, INC. - Newton | Newton | — | ◇ UNVERIFIED |
| AFAxmear Fabricating Services INC. | Keswick | — | ◇ UNVERIFIED |
| AMAz Manufacturing & Sales | Lamoni | — | ◇ UNVERIFIED |
 B & B Manufacturing | Janesville | — | ◇ UNVERIFIED |
| BRBliek's Repair | Hull | — | ◇ UNVERIFIED |
| BLBlue Lakes Ammo | Spencer | — | ◇ UNVERIFIED |
| BOBoylers Ornamental Iron INC. | Bettendorf | — | ◇ UNVERIFIED |
| BPBP Pollema, LLC | Doon | — | ◇ UNVERIFIED |
| BFBrand Fab LLC | Ely | — | ◇ UNVERIFIED |
| BBunn-o-matic | Afton | — | ◇ UNVERIFIED |
| CMCanaan Machine and Tool | Mount Union | — | ◇ UNVERIFIED |
| CBCeco Building Systems | Mount Pleasant | — | ◇ UNVERIFIED |
| CCCentral Custom Brass LLC | Estherville | — | ◇ UNVERIFIED |
| CICentral Iowa Building Supply, INC. | Webster City | — | ◇ UNVERIFIED |
| CICentral Iowa Powder Coating, INC. | Hubbard | — | ◇ UNVERIFIED |
| CWCharlie's Welding, INC. | Tiffin | — | ◇ UNVERIFIED |
| CTChicago Tube & Iron | Ankeny | — | ◇ UNVERIFIED |
| CTCollis Tool Corporation -adp | Camanche | — | ◇ UNVERIFIED |
| CMConstruction Materials, INC. | Cedar Rapids | — | ◇ UNVERIFIED |
| CPConstruction Products Dist LLC | Des Moines | — | ◇ UNVERIFIED |
| CACraigs Auto Repair & Service | Birmingham | — | ◇ UNVERIFIED |
| CWCreative Werks Inc | Des Moines | — | ◇ UNVERIFIED |
| CWCreative Werks Inc | Des Moines | — | ◇ UNVERIFIED |
| CCCrown Cork and Seal | Dubuque | — | ◇ UNVERIFIED |
| CMCummins Manufacturing INC. | Tipton | — | ◇ UNVERIFIED |
| CCCustom Cutlery, Inc. | Marengo | — | ◇ UNVERIFIED |
| CSCustom Steel Service | Ames | — | ◇ UNVERIFIED |
| DPDecker Precision Machining, INC. | Peosta | — | ◇ UNVERIFIED |
| DODecorah Ops Textron Fastening Sys | Decorah | — | ◇ UNVERIFIED |
| DMDelta Metals, LLC | Leon | — | ◇ UNVERIFIED |
| DTDetroit Tool & Metal Products | Fort Madison | — | ◇ UNVERIFIED |
| DCDonaldson Company, INC - Grinnell | Grinnell | — | ◇ UNVERIFIED |
| DSDose Steelworks, Inc | Story City | — | ◇ UNVERIFIED |
| ECEaton Corporation - Belmond | Belmond | — | ◇ UNVERIFIED |
| EIEcho Investing, Inc | Altoona | — | ◇ UNVERIFIED |
| EIEcho Investing, Inc | Maquoketa | — | ◇ UNVERIFIED |
| ESE.g. Staats & Company, INC. | Mount Pleasant | — | ◇ UNVERIFIED |
| EFElm Family Enterprises, Inc | Marion | — | ◇ UNVERIFIED |
| EEmerson | Marshalltown | — | ◇ UNVERIFIED |
