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Founded in 1999 by two NASA microgravity combustion researchers, IEC Infrared Systems is a Middleburg Heights, Ohio, NASA Spinoff company focused on surveillance and defense technology. Its engineers design and manufacture integrated infrared imaging systems in-house for military and government users, while its ISO 9001 certification reflects the company’s established quality system.
Founded in 2004, Bellefontaine, Ohio-based IEG Plastics makes injection-molded plastic parts and assemblies, taking projects from product design and tooling through production. Its in-house metrology lab and ISO 9001:2015-certified quality system support the tight-tolerance work required for automotive safety components, while assembly capabilities keep more of the process under one roof. IEG serves automotive and consumer-goods manufacturers and also supports sporting-goods projects.
IEM grew from a barn on a family ranch in Fremont, California, alongside the rise of Silicon Valley, and has spent more than 75 years building a reputation for solving difficult power-distribution challenges. Today, the company designs and manufactures custom electrical systems for critical environments, with more than 1.5 million square feet of manufacturing capacity supporting projects across North America. Its history includes pioneering CAD/CAM for electrical-equipment fabrication and developing specialized switchgear for demanding applications.
Founded in 1958 as Industrial Electronic Rubber, IER Fujikura is a long-established Ohio manufacturer known for pioneering the molding of fluoroelastomers. Now a subsidiary of Fujikura Composites, it develops custom rubber components for demanding sealing applications, supporting customers from material selection through production.
Formed in 2013 from MISCOR Group, IES Infrastructure is the infrastructure division of publicly traded IES Holdings, serving industrial and commercial customers through a nationwide network of specialized companies. Its identity is shaped by the growth of that network, including the 450,000-square-foot Greiner Industries operation and the addition of Wisconsin Heavy Fabrication, which expanded its reach into large-scale steel work. Today, IES Infrastructure combines local manufacturing with nationwide field support for the systems that power demanding industrial operations.
IES Systems, Inc. designs and manufactures factory automation and test equipment for manufacturing and engineering customers. Its work includes turnkey avionics and switchgear test systems, as well as robotic assembly automation.
IFGL Group manufactures specialized refractory products and solutions for iron and steel production and other industrial sectors. Founded in 1979 as Indo Flogates, it has grown into a global group with more than 10 manufacturing units across Asia, Europe, and North America, serving customers in over 50 countries. Its operations include a research centre at Kalunga, India, and the company reports a workforce of more than 3,000 employees.
Founded in 1977 and operating since 1981, Mentor-based IHI Connectors manufactures USA-made electrical wire lugs and connectors, building on roots as a custom machining house for electrical components. The employee-owned company now works from 63,000 square feet with more than 50 employees and supports both stocked products and connector designs made to OEM specifications. IHI has maintained ISO 9001 registration since 2004.
Born from four home brewers’ shared project, Ill Mannered Brewing Company has made handcrafted beer in Powell since 2015, brewing in small 186-gallon batches on its six-barrel electric system. That scale lets the team experiment and keep new beers rotating through the taps. The brewery now also welcomes guests at a second taproom and barrel house in a rehabilitated 150-year-old former horse tack shop in Marysville.
Founded in 1912, Illinois Tool Works (ITW) is a global multi-industry manufacturer whose products and engineered solutions show up everywhere from restaurant equipment and automotive components to construction tools and test systems. Based in Glenview, Illinois, the Fortune 300 company operates through seven segments, more than 80 global divisions and about 43,000 employees in 49 countries. Its distinctive approach combines a decentralized, entrepreneurial culture with an 80/20 operating process and customer-back innovation, exemplified by Paslode’s invention of the cordless nailer.
From a 1.1-million-square-foot plant in Pataskala, Illuminate USA manufactures high-efficiency bifacial solar panels for the American market. Production began in February 2024, and the facility—described as North America’s largest single-site solar panel manufacturing operation—has more than 1,500 employees and capacity for 9.2 million panels annually. The Invenergy affiliate is also building Ohio’s renewable-energy workforce through partnerships with local schools and training programs.
ILPEA Industries, Inc. manufactures custom plastic extrusions and related products for appliance, construction, automotive, food-service, and utility applications. Its predecessor, Holm Industries, was established in 1978 in Scottsburg, Indiana, to produce custom plastic extrusions; its OEM/Miller operation, established in Aurora, Ohio, in 1984, grew from an automotive protective-covering business and became known for flexible tubing used in major appliance applications.
Established in 1999, Image Concepts is a Valley View custom print manufacturer serving Northeast Ohio and customers throughout the United States. Its production work spans everyday print projects and highly specialized jobs such as large-format graphics and precision die cutting, supported by an integrated online ordering and automated workflow system. The company presents itself as a one-stop partner for taking branded print projects from concept through completion.
Founded in 1939 after its predecessor opened as a bicycle shop in 1921, Imasen Electric Industrial is an Aichi-based manufacturer whose century-spanning history began with Japan’s first domestically produced automotive horn. Today, its 1,167 employees develop and make components that support automotive safety and comfort, while the company also applies its technology to fields such as aviation and walking assistance.
Based in Perrysburg, Ohio, IMCO Carbide Tool designs and manufactures carbide cutting tools, with end mills at the center of its work. The company pairs hands-on machining experience with ongoing tool-development research to address difficult cutting problems, and it also reconditions most carbide end mills—including competitors’ products—to extend their useful life.
IMET Corporation is a Cleveland-area technology company known for modeling wastewater treatment on the biology of healthy waterways. Its patented modular systems support aerobic microorganisms in existing wastewater infrastructure, including residential septic applications and municipal treatment plants. The company’s residential system is certified to NSF/ANSI 40 and 245.
Since 2013, iMFLUX has developed adaptive low-constant-pressure injection-molding technology that helps manufacturers run plastic injection machines more reliably with fewer operator adjustments. Its system combines closed-loop feedback software with molding hardware to adapt in real time across machines, molds, and materials, including recycled and bio-derived resins. The company’s approach is aimed at autonomous molding while reducing energy use, wear, waste, and part weight.
From its roots in perfume retail, IMH Fragrance has grown into a Columbus, Ohio fragrance maker and private-label partner, developing and producing scents for its own and client brands. Its 45,000-square-foot vertically integrated facility handles the work from formulation through manufacturing and U.S. distribution, with capacity for up to 25,000 bottles per day. IMH collaborates with internationally recognized perfumers and follows IFRA guidelines while meeting FDA requirements under the 2022 Modernization of Cosmetics Regulation Act.
IMI is a Chambersburg, Pennsylvania company that develops and sells tire and wheel maintenance products for commercial transportation. Founded in 1973 by Robert Fogal, Sr., the company introduced STS tire sealant and has since added products such as internal tire-balancing solutions and wheel-maintenance equipment.
Founded in 1999 as part of France-based, family-owned Lacroix Group, IML Containers manufactures in-mold labeled packaging and provides integrated packaging production for North and South American customers. Its operations encompass label printing and container molding, with facilities identified in Quebec, Iowa, Arizona, Illinois, and Colombia; the company says it grew to about 200 employees within its first decade in North America.