This selection of companies in Wisconsin primarily includes mid-sized firms in manufacturing, with a strong presence in specialized industrial products. Clarios, with 6268 employees, produces advanced energy storage solutions, while Sensient Technologies Corporation develops specialized ingredients for various industries. PSSI provides food safety solutions, and ORBIS Corporation manufactures reusable plastic containers and pallets. Hydrite is an independent provider of chemicals and services, and MGS Mfg. Group offers healthcare manufacturing solutions.
Food and beverage manufacturing, along with plastics manufacturing, emerge as prominent sectors among these companies. Many of these firms, such as PSSI, ORBIS Corporation, and Hydrite, were founded in the mid-20th century, indicating a long-standing industrial base in the region. There is a notable concentration of headquarters in Milwaukee and Kieler.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
Clariosclarios.com
Global leader in advanced energy storage solutions, producing 150 million batteries annually for a third of the world's vehicles Expanding capacity to meet future demand |
6,268 | |||
| 2 |
Sensient Technologies Corporationsensient.com
Enhancing sensory experiences by developing specialized ingredients and technologies for colors, flavors, and extracts in industries worldwide |
3,134 | |||
| 3 |
PSSIfortrexsolutions.com
Provider of food safety solutions for food processing facilities, offering contract sanitation services, chemical innovations, pest prevention, and intervention solutions with skilled specialists |
2,586 | |||
| 4 |
ORBIS Corporationorbiscorporation.com
Reusable plastic containers and pallets improve supply chain flow, reduce costs, enhance profitability, optimize operations, and promote sustainability. |
1,729 | |||
| 5 |
Packers Sanitation Services, Inc. (PSSI)pssi.co
This company specializes in food safety and provides information and resources to ensure the safety of food products for consumers |
1,321 | |||
| 6 |
AMSOIL INC.amsoil.com
A company specializing in synthetic lubricants that provide exceptional wear protection, increased fuel efficiency, and overall performance for various vehicles and equipment |
980 | |||
| 7 |
Hydritehydrite.com
Innovative independent provider of chemicals and services, focused on food safety, water treatment, manufacturing efficiency, and crop health, with strong community engagement |
813 | |||
| 8 |
MGS Mfg. Groupmgsmfg.com
Global provider of healthcare manufacturing solutions with vertically integrated capabilities from design to assembly, creating breakthrough innovations for Pharma, Diagnostic, and MedTech companies |
813 | |||
| 9 |
Appvionappvion.com
A sustainable specialty coating solutions company in Appleton, WI, known for direct thermal paper, film products, and renewable packaging solutions |
626 | |||
| 10 |
Flambeau, Inc.flambeau.com
The company specializes in manufacturing a diverse range of plastic products, offering design assistance, tooling, contract manufacturing, and various retail divisions worldwide |
553 | |||
| 11 |
Pioneer Metal Finishingpioneermetal.com
A metal finishing company offering a wide range of services across the US and Mexico, focused on value, quality, and customer relationships |
433 | |||
| 12 |
Fisher Bartonfisherbarton.com
A manufacturing innovation partner specializing in high-wear components, offering proprietary heat treating and thermal spray solutions for various industries |
233 | |||
| 13 |
Hentzen Coatingshentzen.com
A leading independent paint company focused on developing environmentally friendly coatings, with expertise in reducing VOC emissions and providing technical support |
233 | |||
| 14 |
Lucas Milhauptlucasmilhaupt.com
A global leader in the brazing industry, providing innovative metal joining solutions for various industries with a focus on quality, process efficiency, and customer support |
222 | |||
| 15 |
SACO AEI Polymerssacoaei.com
A technology-driven manufacturer providing innovative polymer solutions for various industries, focusing on quality, efficiency, and customer value with global facilities |
202 | |||
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| 16 |
Benzamsoilindustrial.com
Manufacturer of industrial lubricants and metalworking fluids providing technical support, testing, and customized solutions for operational efficiency. |
199 | |||
| 17 |
Nekoosanekoosa.com
Specializing in manufacturing high-quality print media substrates for commercial print and graphics markets, offering a diverse product portfolio with a focus on innovation and sustainability |
181 | |||
| 18 |
Sussex IMsussexim.com
A custom injection molder and automated assembly company offering innovative solutions for molding, decorating, and assembly needs with a focus on value-added operations |
130 | |||
| 19 |
Ritus Corporationritus.com
Specializing in custom-molded products for automotive, industrial, marine, and recreational markets, offering a wide range of rubber and plastic molding services |
119 | |||
| 20 |
Kaysun Corporationkaysun.com
Specializing in highly engineered plastic products and assemblies, this company collaborates with clients to tackle complex applications with precision and innovation |
113 | |||
| 21 |
Five Star Plasticsfive-star-plastics.com
Plastics product development organization offering rapid tooling, prototyping, design/engineering solutions, urethane models, injection molding, welding, printing, assembly, with focus on customer service and quality |
75 | |||
| 22 |
Essential Industries, Incessind.com
A world leader in polymer innovation and floor care technology, specializing in customized chemistries for various industries and customer specifications |
73 | |||
| 23 |
Interfacialifllc.com
A leader in developing advanced materials and manufacturing processes for various markets, offering services in development, specialty materials, and engineered substrates |
62 | |||
| 24 |
Sintex Wausaukee Composites, Inc.wauscomp.com
Manufacturer of composite plastic components for OEM customers in various industries, offering design, prototyping, manufacturing, and assembly services with a focus on excellence and innovation |
41 | |||
| 25 |
Vision Plastics, Inc.visionplastics.net
Vision Plastics provides high-quality plastic injection molded parts to various industries, offering design engineering assistance, mold maintenance, secondary operations, and quality assurance solutions |
40 | |||
| 26 |
Seljan Companyseljan.com
A family-owned manufacturing company specializing in stamping, fabrication, rotational molding, injection molding, and more with a focus on customer service |
31 | |||
| 27 |
Eagle Performance Plastics, Inc.eagle-plastics.com
A leading supplier of custom-machined plastic components for various industries, offering precision CNC machining and fabrication services with a focus on quality and reliability |
31 | |||
| 28 |
Cornerstone Compositescornerstonecomposites.com
The engineering team specializes in advancing products for manufacturers by creating customized composite formulations to replace metal and thermoplastic parts |
29 | |||
| 29 |
Plasticraft Corporationplasticraftcorp.com
Specializing in injection molded parts and assemblies, we strive to deliver high-quality plastic components and ensure precision in our work |
21 | |||
| 30 |
Kracor, a division of Yamaha Marine Systems Company, Inc.kracor.com
Manufacturer of high-quality rotational molded plastic products for various industries, known for innovative design, advanced technology, and exceptional customer service |
13 | |||
| 31 |
R.A.D. Groupradgroupinc.com
A molding company specializing in silicone, rubber, and plastic components, offering a wide range of process options and serving various industries with quality parts and assemblies |
5 | |||
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How this list is built
Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Nov 12, 2026.
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