Public record · Michigan
St. Clair County: 135 companies on record.
The companies the public registers place in St. Clair County, Michigan, by sector, as DealSTE read them — read 8 Nov 2026. Each opens on its own record page: registration, sites, permits, liens and compliance, each with its register.
| Sector | Companies |
|---|---|
| Manufacturing | 55 |
| Auto services — repair, collision, tire | 21 |
| Healthcare — medical, dental & home health | 21 |
| Defense and federal contracting | 15 |
| Distribution & wholesale | 6 |
| Retail — specialty, convenience & liquor | 4 |
| Trades — HVAC, plumbing, electrical, mechanical | 4 |
| Home construction & remodeling | 3 |
| Commercial & specialty contracting | 1 |
| Landscaping, lawn care & grounds | 1 |
| Professional services — accounting, engineering, insurance | 1 |
| Restaurants | 1 |
| Sand and gravel | 1 |
| Trucking | 1 |
| Company | Sector | City |
|---|---|---|
| Centracore, LLC. | Manufacturing | St. Clair |
| Roller Die | Manufacturing | Yale |
| Same | Manufacturing | Cottrellville |
| Auria Solutions LLC. | Manufacturing | Saint Clair |
| Aludyune | Manufacturing | Port Huron |
| Wright Plastic Products | Manufacturing | Sheridan |
| ALD Thermal Treatment, Inc. | Manufacturing | Port Huron |
| Eckhart | Manufacturing | New Baltimore |
| Yen Group LLC | Manufacturing | Port Huron |
| Greene Group Industries | Manufacturing | Port Huron |
| PJ Wallbank Springs, Inc. | Manufacturing | Port Huron |
| Axiom AES | Manufacturing | Capac |
| Instaset Plastics Company | Manufacturing | Ira Township |
| Marysville Ethanol, LLC | Manufacturing | Marysville |
| Mueller Forging | Manufacturing | Port Huron |
| Mueller Impacts | Manufacturing | Marysville |
| Riverside Spline & Gear, Inc. | Manufacturing | Marine City |
| Selective Industries, Inc | Manufacturing | Marine City |
| BioPro Inc | Manufacturing | Port Huron |
| Black River Manufacturing, Inc. | Manufacturing | Port Huron |
| CIPA USA Inc. | Manufacturing | Port Huron |
| Heartland Steel Holdings LLC | Manufacturing | Marysville |
| International Automotive Components (AIC) | Manufacturing | Port Huron |
| Material Handling Technology, Inc. | Manufacturing | Fairhaven |
| Miller Broach, Inc. | Manufacturing | Capac |
| Norma Group | Manufacturing | St Clair |
| Witco Inc. | Manufacturing | Avoca |
| Wirtz Manufacturing Company, Inc. | Manufacturing | Port Huron |
| Antolin St. Clair LLC. | Manufacturing | China |
| Mpp Corp | Manufacturing | Kimball |
| High Grade Materials-Port Huron LLC | Manufacturing | Kimball |
| Dynamic Polymer Solutions, LLC | Manufacturing | Saint Clair |
| Ira | Manufacturing | Ira Township |
| M L CHARTIER INC | Trades — HVAC, plumbing, electrical, mechanical | FAIR HAVEN |
| Michigan Specialty Coatings INC | Trades — HVAC, plumbing, electrical, mechanical | SAINT CLAIR |
| Midway Group, LLC dba Protocon Ready Mix | Manufacturing | Washington |
| NORTHGATE FORD INC | Retail — specialty, convenience & liquor | PORT HURON |
| PROS SERVICES INC | Trucking, freight & logistics | PORT HURON |
| St Clair Chrysler Jeep Dodge LLC | Retail — specialty, convenience & liquor | SAINT CLAIR |
| Trugreen Limited Partnership | Landscaping, lawn care & grounds | WIXOM |
| Michigan Petroleum Technologies INC | Distribution & wholesale | CLIO |
| KKSP Precision Machining | Manufacturing | Glendale Heights |
| Midwest Fiberglas Fabricators, Incorporated | Defense & federal contracting | Marine City |
| RETAIL CONTRACTORS OF PUERTO RICO, INC. | Home construction & remodeling | MARINE CITY |
| Sunsation Products, Inc. | Manufacturing | Ira Twp |
| American Industrial Machiner | Manufacturing | St Clair |
| MAPAL Holding GMbH | Manufacturing | Port Huron |
| SABA NORTH AMERICA LLC | Distribution & wholesale | KIMBALL |
| Prism | Manufacturing | Meadville |
| True North Logistics, LLC | Defense & federal contracting | Saint Clair |
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