| # | Company | Employees |
|---|---|---|
| 1 |
TreeHouse Foodstreehousefoods.com
Company provides private label food and beverage solutions to retail grocery and foodservice customers in North America, offering quality and value across multiple product categories |
3,053 |
| 2 |
Ryersonryerson.com
A global metal processing and distribution company with operations in the US, Mexico, Canada, and China, employing approximately 4,200 people |
2,267 |
| 3 |
Robertshawrobertshaw.com
Global engineering and manufacturing company specializing in product solutions for the white goods industry, with a diverse portfolio of controls for appliances |
1,742 |
| 4 |
OSI Grouposigroup.com
Custom value-added food product development, global sourcing, processing, and distribution for leading foodservice and retail brands worldwide. |
1,601 |
| 5 |
Inventus Powerinventuspower.com
Design and manufacture advanced Li-ion battery packs, smart chargers, and power supplies for global OEMs across portable, motive, and stationary applications. |
1,564 |
| 6 |
Voyant Beautyvoyantbeauty.com
This company specializes in developing and manufacturing high-performance personal care and beauty products, offering marketing insights, ingredient research, and award-winning products |
1,260 |
| 7 |
Dynacast Internationaldynacast.com
A global leader in high-quality die cast components for various industries, leveraging 80+ years of experience to deliver precision engineered metal components |
1,171 |
| 8 |
Sterigenicssterigenics.com
Global leader in comprehensive sterilization services for medical device, pharmaceutical, and food safety industries, ensuring safety of patients worldwide through various sterilization technologies |
1,111 |
| 9 |
Quality Controlqccorp.com
Stay updated on QCC, LLC through their LinkedIn page for posts and details on the company's latest information and offerings |
1,089 |
| 10 |
Lakeside Book Companylakesidebookcompany.com
This company specializes in crafting high-quality books for publishers, providing printing, binding, distribution, jacket design, and Amazon selling services They prioritize employee growth |
1,026 |
| 11 |
Winland Foodswinlandfoods.com
Global manufacturer of private label and branded foods for retail and co-pack customers, creating delicious food using fine ingredients with high standards |
955 |
| 12 |
National Power Corporationnationalpower.com
Design and manufacture custom battery packs for global OEM market, utilizing engineering expertise and strategic alliances for portable power solutions. |
832 |
| 13 |
SC2 Services, Inc.sc2services.com
The company offers customized services like fulfillment, industrial painting, reverse logistics, and kitting They focus on providing quality and value-added solutions |
823 |
| 14 |
PLZ Corpplzcorp.com
Develops, manufactures, packages, and distributes a comprehensive line of contract fill, branded, and private-label specialty aerosol products for home and industrial use. |
822 |
| 15 |
Maker's Pridemakerspride.com
Contract manufacturing partner producing diverse food products including snacks, baked goods, nutrition, fresh, and frozen foods across North America. |
619 |
| 16 |
Group Ogroupo.com
An end-to-end business process outsourcing provider offering innovative marketing, supply chain, and packaging solutions with a focus on technology and efficiency |
604 |
| 17 |
The Royal Groupteamtrg.com
A leading independent corrugated box and display manufacturer with nationwide locations providing value-added solutions for industrial packaging and graphic displays |
593 |
| 18 |
Avalign Technologiesavalign.com
A premier supplier of surgical implants, instruments, and delivery systems with a commitment to excellence, integrity, innovation, and investing in its diverse team for growth and success |
549 |
| 19 |
Cadrex Manufacturing Solutionscadrex.com
A leading manufacturing partner with 21 facilities, providing mechanical solutions for various industries with expertise from concept to scale production |
529 |
| 20 |
RRD Integrated Packaging Solutionsrrd.com
Global supply chain solutions provider offering value-add solutions for medical devices, diagnostics, nutraceuticals, connected care, and diabetes care products through packaging design, sourcing, quality assurance, and more |
510 |
| 21 |
SyBridge Technologiessybridge.com
Full-lifecycle injection mold tooling partner for healthcare, packaging, consumer goods, mobility, industrial sectors; design, engineering, production, maintenance, 3D printing. |
468 |
| 22 |
Sigmatron Internationalsigmatronintl.com
Electronics manufacturing services provider with a global footprint offering customized solutions for various industries, with focus on quality and competitive materials management |
421 |
| 23 |
KI Industries, Inc.kiindustries.com
Design manufacture decorative plastic die cast components for automotive and appliance industries with focus on aesthetics quality and customer service. |
335 |
| 24 |
Richelieu Foodsrichelieufoods.com
National private label food manufacturer specializing in frozen pizza, salad dressing, and BBQ sauce Committed to premium products, food safety, and employee well-being |
329 |
| 25 |
Miniatminiat.com
A 5th generation family-owned business in IL specializing in producing value-added beef, pork, and poultry for national chains and CPG companies |
323 |
| 26 |
Acme Industriesacmeind.com
A full-service contract manufacturing company specializing in optimizing supply chain and technical support for machined parts, assemblies, and components |
216 |
| 27 |
McLaughlin Body Companymclbody.com
This company is a vertically integrated manufacturer of industrial and agricultural products, specializing in product design, fabrication, welding, painting, and assembly |
196 |
| 28 |
Flexan, An Ingersoll Rand Businessflexan.com
A global leader in custom medical device manufacturing, specializing in molding, extrusion, assembly, and packaging Committed to excellence, quality, and innovation |
194 |
| 29 |
Chicago Metal Rolled Productscmrp.com
Specializing in bending and rolling steel of all grades and sizes since 1908 Offers fast delivery and precision work for structural steel, sheet, and plate |
193 |
| 30 |
Hoffer Plasticshofferplastics.com
A leader in custom plastic injection molding since 1953, serving various industries with quality products and attention to detail |
173 |
| 31 |
Dynomax Inc.dynomaxinc.com
Precision manufacturer offering high-precision machined components, injection molding, tooling, sub-assemblies, specialty machines, and spindles for aerospace, defense, transportation, energy, and medical industries |
171 |
| 32 |
Ingersoll Machine Toolsen.machinetools.camozzi.com
A pioneering company in milling machines, composite manufacturing, additive manufacturing, contract manufacturing, and building large telescopes and antennas since 1891 |
168 |
| 33 |
Diversified Labeling Solutionsteamdls.com
Supplier of pressure sensitive labeling solutions for distributors, focused on providing competitive pricing, reliability, and on-time delivery to ensure customer peace of mind |
130 |
| 34 |
Connor Manufacturingconnorms.com
A global precision engineering solution provider for stamped metals and metal fabrication needs, serving various markets including electric vehicles, automotive, and consumer electronics |
126 |
| 35 |
Camcraft, Inc.camcraft.com
A precision machining company with over 50 years of experience, specializing in challenging machined parts applications and supporting product development with exceptional quality and performance metrics |
125 |
| 36 |
Perfect Plastic Printingperfectplastic.com
A pioneer in card manufacturing, this company provides market-ready solutions for secure, gift, retail, EMV, and contactless cards with exceptional quality and service |
119 |
| 37 |
Broadwind, Inc.bwen.com
A precision manufacturer specializing in structures, equipment, and components for clean tech and other specialized applications to help customers optimize performance |
115 |
| 38 |
QCC, LLCqccorp.com
A manufacturing services provider specializing in precision machining, assembling, and testing complete products and machined components for various industries |
111 |
| 39 |
Fabrik Molded Plasticsfabrikind.com
Custom injection molding supplier specializing in precision injection, insert molding, in-mold appliqu茅s, and cosmetic component production for various industries since 1980 |
108 |
| 40 |
General Grind & Machinegeneralgrind.com
A privately owned corporation established in 1976 specializing in manufacturing machined parts with 230,000 square feet of floor space for 24/7 production |
99 |
| 41 |
Swiss Automation, Inc.swissautomation.com
A leading precision machining company serving various industries with dual spindle CNC turning technology, specializing in complex parts with tight tolerances |
96 |
| 42 |
Culture Studioculturestudio.net
A leading apparel production company in Chicago offering innovative solutions, exceptional customer service, and state-of-the-art technology for retail, tour, and e-commerce brands |
94 |
| 43 |
Principal Manufacturing Corporationprincipalmfg.com
A manufacturing company specializing in fine blanking, stamping, injection molding, and value-added processes for the automotive, marine, truck, aerospace, and other industries |
87 |
| 44 |
Wiegelwiegel.com
A leading North American metal stamper and product assembler offering custom solutions for OEMs with automated manufacturing and precision components for various industries |
86 |
| 45 |
TMF Plastic Solutionstmfenterprises.com
Custom injection molding of plastic components and assemblies for consumer goods, durable goods, fitness, food service, communications, and OEM industries. |
85 |
| 46 |
Schultes Precision Manufacturing, Inc.schultes.com
A leading precision manufacturing company since 1946 with a modern facility, over 100 CNC machines, prototype services, assembly capabilities, and ISO 9000 certification |
71 |
| 47 | 66 | |
| 48 |
H3 Manufacturing Group, LLCh3mfggroup.com
High-quality precision parts manufacturer specializing in CNC machining, fabrication, and welding for a variety of industries including defense, aerospace, and medical diagnostics |
64 |
| 49 |
Arc-Tronics, Inc.arc-tronics.com
Specializes in engineering, design, and manufacture of custom printed circuit boards, electromechanical, and cable/harness assembly products, from prototypes to production runs. |
62 |
| 50 |
Bronson & Bratton, Inc.bronsonandbratton.com
A manufacturing company specializing in tungsten carbide & ceramic tools, dies, and precision parts in various industries with tight tolerances |
56 |
| 51 |
UCAL Systems, Inc dba AMTEC Precision Productsucalsystems.com
Precision machining company with 50+ years experience, specializing in high volume manufacturing with close tolerance CNC, hydromat, screw machines, grinding, and assembly operations ISO/TS 16949 and ISO 14001 certified |
55 |
| 52 |
Tecnova Electronicstecnova.com
Advanced electronic manufacturing and engineering company specializing in innovative design, quality production, and long-term client partnerships for various electronic applications |
55 |
| 53 |
Profile Plastics, Inc.thermoform.com
Specializing in custom molded plastic parts through thermoforming, Profile Plastics offers high-quality, precise components for various industries with ISO 9001:2008 certification |
52 |
| 54 |
Envision3envision-3.com
A premier provider in Chicago area offering commercial print, packaging, warehousing/fulfillment, mailing services, and custom online fulfillment with high quality results |
52 |
| 55 |
DACO Incorporateddacoinc.com
A family business providing manufacturing solutions to OEMs in automotive and construction industries, focusing on customer service, quality, and technology leadership |
46 |
| 56 |
Cypress MultiGraphics, LLCresourcelabel.com
This company specializes in manufacturing high-quality labels and product identification solutions using various printing methods, with a focus on fast, excellent service |
42 |
| 57 |
Dooling Machine Productsdoolingmachine.com
Manufacturing and providing machinery products, located in Hartford, Illinois, United States Specializing in the production of various machine components |
42 |
| 58 |
M & E Global Group Inc.megroupinc.com
A versatile company offering design, engineering, manufacturing, and fulfillment services for the Retail Fixture/POP Display and Truck/Trailer industries with extensive warehousing |
36 |
| 59 |
Ludlow Mfg Includlowmfg.com
Metal fabrication company specializing in serving OEMs with CNC technology, skilled craftsmen, lean manufacturing, and high customer service levels ISO 9001-2008 registered, woman-owned small business |
33 |
| 60 |
International Control Servicesaimtronic.com
Provider of electronic manufacturing services for industrial, security, medical, communications, defense, and aerospace industries, with a focus on quality, on-time delivery, and value |
32 |
| 61 |
TRICOR Systems Inc.tricor-systems.com
An electronic contract manufacturer specializing in innovative design and production of test instrumentation for medical, aerospace, military, and industrial markets |
31 |
| 62 |
SIIX USA Corporationsiix.co.jp
A global company offering Electronics Manufacturing Services (EMS) to electronics and automobile manufacturers, specializing in parts procurement, logistics, and manufacturing |
30 |
| 63 |
Headly Manufacturing Companyheadlymfg.com
A leading contract manufacturer specializing in precision drawn metal stampings for the sealing industry, known for exceptional quality, global presence, and innovative stretch forming process |
30 |
| 64 |
P&P Industries, Inc.ppind.com
A family-owned custom injection molder specializing in high-quality plastic parts, known for innovation, rigorous quality systems, and advanced manufacturing technologies |
29 |
| 65 |
The Partner Companiesthepartnercos.com
Global network of advanced manufacturers specializing in niche processes and core capabilities, delivering precision manufacturing solutions for aerospace, defense, clean energy, medical, technology, and telecom industries |
28 |
| 66 |
Accelerated Machine Design and Engineering LLCmegaplusredirection.tedata.net
Innovative full-service provider of high-performance engineered systems, specializing in product development, manufacturing, and complete lifecycle support services |
27 |
| 67 |
Napco Brandsnapcobrands.com
A family-owned coffee roastery with over 120 years of experience, offering premium coffee brands, private label services, and tailored solutions for diverse clientele |
26 |
| 68 |
CenMac Metalworkscenmacmetalworks.com
Family-owned manufacturing company specializing in laser-cutting, forming, CNC machining, welding, plasma cutting, and metal stamping for various industries |
24 |
| 69 |
MIDWEST MOLDING, INC.mwmolding.com
A comprehensive manufacturing solution provider offering high-quality components for various industries, focusing on innovative design solutions to reduce costs without compromising quality |
24 |
| 70 |
ANPEC INDUSTRIESanpecindustries.com
Machinery company located in Pecatonica, Illinois, specializing in manufacturing and distributing industrial equipment |
20 |
| 71 |
GCDL/Golden Ceramic Dental Labgcdl.net
Full-service dental lab offering state-of-the-art dental products and services including implants, removables, orthodontics, clear aligners, and sleep solutions |
20 |
| 72 |
CM International Industriescmiic.com
The company specializes in manufacturing products for top industrial corporations |
20 |
| 73 |
Synergetic Industries, LLCsynergeticindustries.com
Innovative engineering & manufacturing solutions for various industries with services including design, prototyping, consultation, and custom machine design |
18 |
| 74 |
AJR Enterprises, LLC
A leading contract manufacturer specializing in superior medical devices and advanced manufacturing solutions, prioritizing quality products and exceptional customer satisfaction in the industry |
18 |
| 75 |
Parke Warehouses and Toll Processingparkewarehouses.com
This company provides industrial community with warehousing, packaging, processing services in Decatur, IL for efficient distribution across Midwest and worldwide markets |
17 |
| 76 |
Slagel Manufacturing, Inc.slagelmanufacturing.com
A family-owned agricultural equipment manufacturer dedicated to quality products, customer satisfaction, and community impact for over 20 years |
16 |
| 77 |
X-L Engineering Corp.xleng.com
**Summary:** Provider of precision components using state-of-the-art equipment and expertise in processing challenging materials Specializing in creative solutions and responsive manufacturing services |
16 |
| 78 |
Bridgestone Inc.bridgestone.net
Specializing in precision metal products, our company offers high-quality, efficient CNC machining services for various industries, focusing on quality and automation in production |
15 |
| 79 |
Chicago Expert Importersceimporters.com
Global sourcing, import/export logistics, warehousing, and distribution company offering concept-to-completion services with strong factory base, logistics support, warehousing, and distribution solutions |
12 |
| 80 |
Absolute Turn, Inc.absoluteturn.com
Provider of precision machining services, specializing in multi-axis turning, milling, and Swiss Style machining for machinery manufacturing and component supply |
11 |
| 81 |
Storms Industries Incstormsindustries.com
A machinery company located in Chicago, Illinois, specializing in industrial equipment and machinery solutions |
11 |
| 82 |
DUGAN TOOL & DIE, INC.dugantool.net
A machinery company based in Illinois specializing in tools and dies for various industries |
10 |
| 83 |
formerly SMS Display Groupagilityretail.com
Specializing in creating turnkey retail solutions, we streamline costs and maximize value for large-scale programs, offering services from design to installation and post-sales support |
10 |
| 84 |
Ikonic Engineering And Designikonicinc.com
An Engineering Design and Manufacturing company specializing in 3D and 2D modeling, new product development, analysis, material recommendations, and die design |
9 |
| 85 |
Active Precision Manufacturing, Incactiveprecision.net
Manufacturing precision parts for various industries, offering fabrication, assemblies, testing, and turnkey projects in a fully equipped 36,000 sq ft facility |
6 |
| 86 |
Crestwood Industries | ISO 9001:2015 Certifiedcrestwoodind.com
Specializing in precision plastic parts manufacturing, this company offers design assistance, tooling services, manufacturing, and delivery of finished goods |
6 |
| 87 |
MARKET READY, INCmarketreadyinc.com
Specializing in boutique consumer products, this company manages every aspect of the supply chain from formula development, packaging design, sourcing, manufacturing, logistics, and sales solutions |
6 |
| 88 |
MICROTECH MACHINE COMPANY, INCmicrotech-machine.com
A company specializing in product design, engineering, and development with expertise in precision machining for various industries, ensuring high quality and efficiency |
5 |
| 89 |
Hansford Parts & Productshpproc.com
A manufacturing solutions company with over 30 years of experience, providing quality parts, machine tool products, and assembly services with ISO9001 certification |
5 |
| 90 |
CQ+ MFG Group LLCcqpmfg.com
A leader in producing precision machined components for various industries using the latest technology to meet customer specifications |
5 |
| 91 |
ISS Manufacturingissmanufacter.com
A team of trained professionals focusing on improving manufacturing methods, offering a parts borrowing program, complex part design, computer-aided modeling, and innovative solutions |
4 |
| 92 |
Omex Technologies, Inc.omextech.com
This company provides optical engineering, design, and manufacturing services for medical, industrial, and aerospace applications, specializing in custom optical instruments and components |
4 |
| 93 |
Circuits by UScircuitsbyus.com
A premier electronic manufacturing service in Chicago and Milwaukee with over 35 years of experience, delivering high-quality results exceeding industry standards |
3 |
| 94 |
Great Apparel For Yougreatapparelforyou.com
An apparel company specializing in Print-on-Demand Garment Fulfillment, Direct-to-Garment & Screen Printing, and Embroidery services for businesses and individuals |
2 |
| 95 |
JBW Machining, Inc.jbwmachining.com
Precision manufacturing company with over 40 years of experience, offering custom solutions to meet specific requirements with expertise in CNC machining |
2 |
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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 Oct 24, 2026.
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