Adams Thermal Systems INC | Canton | 100–499 | ● ACTIVE |
| AEApplied Engineering, INC. | Yankton | 100–499 | ● ACTIVE |
Dakota Bodies, LLC | Watertown | 100–499 | ● ACTIVE |
| MEManitou Equipment America, LLC. - Madison | Madison | 100–499 | ● ACTIVE |
| MEMarmen Energy Company | Brandon | 100–499 | ● ACTIVE |
Trussbilt LLC | Huron | 100–499 | ● ACTIVE |
Alkota Cleaning Systems INC | Alcester | — | ● ACTIVE |
| AEAmerican Engineered Products | De Smet | 20–99 | ● ACTIVE |
Amtec CORP | Clear Lake | — | ● ACTIVE |
Dynamic Engineering, INC. | Watertown | 20–99 | ● ACTIVE |
H-s Precision, INC | Rapid City | — | ● ACTIVE |
| KMKoyker Manufacturing CO | Lennox | 20–99 | ● ACTIVE |
Rpm Innovations INC | Rapid City | 20–99 | ● ACTIVE |
Tooling Solutions Worldwide, INC. | Watertown | — | ● ACTIVE |
Tri-state Welding and Metal Fabrication LLC | Freeman | — | ● ACTIVE |
| AAAdvanced Aluminum Structures, INC. | Sturgis | — | ● ACTIVE |
American Warrior Enterprises INC | Sioux Falls | — | ● ACTIVE |
Blucoat, LLC | Revillo | — | ● ACTIVE |
Boom Concrete INC | Newell | — | ● ACTIVE |
Dakota Fluid Power, INC. | Sioux Falls | — | ● ACTIVE |
Eei Enterprise LLC | Yankton | — | ● ACTIVE |
Flagshooter, INC | Dell Rapids | — | ● ACTIVE |
| HEHavoc Engineering Group, LLC | Brookings | — | ● ACTIVE |
Institutions Services, INC. | Sioux Falls | — | ● ACTIVE |
Metwerks LLC | Rapid City | — | ● ACTIVE |
Octaflex Environmental Systems, INC. | Timber Lake | — | ● ACTIVE |
Overhead Systems, LLC | Rapid City | — | ● ACTIVE |
| RTRensberger Technologies INC | Sioux Falls | — | ● ACTIVE |
Rlh INC. | Mission | — | ● ACTIVE |
Walberg Precision LLC | Aberdeen | — | ● ACTIVE |
West River Rifle Company, LLC | Sturgis | — | ● ACTIVE |
Zinvent Industries LLC | Rapid City | — | ● ACTIVE |
| AHAtlas Hydraulics INC | Brandon | 100–499 | ◐ LIKELY ACTIVE |
| ESEgger Steel Company | Sioux Falls | 20–99 | ◐ LIKELY ACTIVE |
| LCLaser Cut | Madison | 1–19 | ◐ LIKELY ACTIVE |
| LLectrus | Tea | — | ◐ LIKELY ACTIVE |
| TOTech Ord, a Division of Amtec Corporation | Clear Lake | 100–499 | ◐ LIKELY ACTIVE |
| DTDakota Tube INC | Watertown | — | ◇ UNVERIFIED |
| LTLuverne Truck Equipment INC | Brandon | — | ◇ UNVERIFIED |
| SESmith Equipment Manufacturing | Watertown | — | ◇ UNVERIFIED |
| PCPowdertech Corporation | Webster | — | ◐ LIKELY ACTIVE |
| DCDegeest Corporation | Tea | — | ◇ UNVERIFIED |
| BHBlack Hills Ammunition INC | Rapid City | — | ◐ LIKELY ACTIVE |
| CICardinal Industries, INC. | Aberdeen | — | ◐ LIKELY ACTIVE |
| HRHeartland Repair & Coatings | Box Elder | 1–19 | ◐ LIKELY ACTIVE |
| HMHorizontal Machining & Mfg. Inc. | Huron | 20–99 | ◐ LIKELY ACTIVE |
| LSLyle Signs INC | De Smet | — | ◐ LIKELY ACTIVE |
| MMMds Manufacturing | Parkston | — | ◐ LIKELY ACTIVE |
| PMPetersen Machine, LLC | Brandon | — | ◐ LIKELY ACTIVE |
| SIScherer Inc. | Sioux Falls | 20–99 | ◐ LIKELY ACTIVE |