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Founded in 1920, MAHLE is an international development partner and supplier to the automotive industry, developing and manufacturing components and systems for passenger cars and commercial vehicles. The company operates 127 production locations and 11 major research and development centers, and focuses on electrification, thermal management, and technologies to reduce CO2 emissions.
Since opening in 1972, Mahoney Foundries has made aluminum and brass castings in Kendallville, pairing its foundry operations with an in-house machining division. The company serves customers across North America with castings ranging from a few ounces to hundreds of pounds, and its nearby Controlled Machining shop handles specialized work on both aluminum and brass parts. Mahoney Foundries is ISO 9001:2015 registered and operates alongside related divisions in Illinois, Ohio, and Indiana.
Founded in 1994, privately owned MAI Manufacturing brings automotive-developed thermal and acoustical abatement solutions to OEMs in industries ranging from heavy-duty trucks to power generation. Based in Marysville, Ohio, the company supports projects from concept through production, including in-house tooling for rapid prototyping, and operates in accordance with IATF 16949:2016 certification.
Established in 1986 as a Toledo presort bureau, Mail It Corporation has grown into a women-owned company handling printing, mailing and fulfillment under one roof. The company processes more than 42 million pieces of mail each year and is the largest first-class mailer in the Toledo/Northwest Ohio area, with 50,000 square feet of temperature- and humidity-controlled warehouse space. Its history in automated postal processing includes CASS-certified mailing services and specialized flat-mail automation.
Opened in 1983 with a used truck, an old baler and three employees, Main Street Fibers is a family-owned Ontario recycler serving commercial and public customers across Southern California. The company now dispatches more than 25 trucks a day, purchases over a million pounds of recyclables daily and processes more than 50 million pounds of California Redemption Value material annually. Its owners and managers bring more than 200 years of combined recycling-industry experience, including a long role as a California Certified Processor.
Founded in Akron in 1987 as Main Street Muffins, Main Street Gourmet now makes customized frozen bakery products for in-store bakeries, restaurants and other food operators. Its specialty is tailoring recipes, formats and packaging to fit a customer’s operation, backed by a 68,000-square-foot manufacturing facility and approximately 150 employees. The company’s products are made in an SQF-certified facility, with Kosher and Halal certifications also supporting its broad customer base.
Inside an 1804 water-powered grist mill overlooking Silver Creek, Main Street Grille and Brewing Co. is a restaurant and brewery operated by Pete and Peggy Kepich since 2007. Its on-site brewery, opened in 2008, produces unfiltered handcrafted beers served alongside a full dining menu in the historic mill setting and brew pub.
Main Street Lighting is a Medina, Ohio manufacturer known for giving architectural and landscape projects a classic streetscape character. It produces decorative poles and bases, with fiberglass options suited to projects ranging from municipal walkways to university campuses.
Founded in 2000 by clinical laboratory scientists Joan Gordon and Clark Rundell, Maine Molecular Quality Controls designs and manufactures molecular quality controls for inherited-disease and infectious-disease testing. Based in Saco, the company grew from Rundell’s patented method for stabilizing DNA constructs and Gordon’s manufacturing protocols, and it continues developing controls for emerging nucleic-acid technologies and custom in vitro diagnostic applications. Its quality system is certified to ISO 13485:2016 and supported by MDSAP accreditation.
Founded in 2006, Maintenance and Repair Technologies (MRT) keeps heavy industrial production moving through equipment repair, reconditioning, machining and fabrication in Middletown, Ohio. Its roots include the E.L. Epperson Company, whose paper- and steel-industry service history stretches back more than 40 years, and MRT now handles repairs and rebuilds for equipment weighing up to 80 tons. The company operates a 5-plus-acre facility with more than 35,000 square feet of workspace and is ISO 9001:2015 certified.
Majel Systems, Inc. builds replaceable industrial computers that preserve and modernize legacy test, measurement, and control systems. Based in Westerville, Ohio, the company combines on-site reverse engineering with a local, air-gap-friendly AI interface that retains system knowledge, helping manufacturers replace aging hardware without rebuilding the entire operation.
Three generations of the Mason family have built Major Metals Company from a 1973 Ohio steel-trading business into a Mansfield manufacturer with more than 50 years on the floor. Today, the family-owned company makes ERW steel tubing for industrial customers in a nearly 230,000-square-foot facility, where its integrated operation keeps material preparation and tube production together under one roof.
MAK Engineering Services specializes in the production and installation of solar and lighting solutions worldwide.
Maker’s Pride is a North American contract food manufacturer and packaging provider serving leading brands, with a history tracing to food processor Peacock Foods, founded in 1942. Launched in 2025 with a revitalized portfolio, the company reports a network of 27 facilities and specializes in bringing food concepts from development through scaled production and commercialization.
From its Cleveland-area factory, MakerGear makes desktop and industrial 3D printers engineered for precision prototyping and production. The company’s machines are manufactured in the USA, with the M2—launched in 2012 and described as its original workhorse—bringing industrial-level performance to a compact footprint. MakerGear also earned a gold medal in the inaugural US Air Force Advanced Manufacturing Olympics, a fitting distinction for printers designed to run reliably over the long haul.
Makers Supply is a Piqua, Ohio packaging specialist known for serving defense contractors and other demanding industrial customers. It designs and builds custom pallets and wood crates, including Mil-Spec shipping solutions, while also offering wood-waste removal and a stated zero-waste sustainability plan.
Makino makes CNC machine tools for precision metal cutting and electrical-discharge machining, pairing them with software, automation and engineering services. The company is particularly focused on demanding work such as micron-level micromachining and complex EDM geometries, while its factory-trained support specialists remain available around the clock to help customers keep equipment running.
Founded in Akron in 1953 by chemist Murray Glauberman, Malco Products makes specialty chemical products for automotive, marine, industrial and household cleaning applications. Still family-owned and operated in its fourth generation, the Northeast Ohio manufacturer serves customers in more than 70 countries from three regional facilities, producing both its own established cleaning brands and contract-manufactured products. Its powder-blending operation alone draws on more than 50 years of experience.
Founded in 1884, Cleveland’s Malin Company makes and distributes specialty wire, with safety and lock wire at the center of its long-running business. The company also draws, forms, straightens and cuts wire for demanding industrial and medical uses, and produces custom twisted-in wire brushes through its sister operation. Malin is ISO 9001:2015 certified and uses handheld X-ray fluorescence testing to verify material composition and stainless-steel grades.
Founded in 1997 by racing brothers Chuck and Lance Mallett, Mallett Performance Cars builds and tunes high-performance GM vehicles, from complete Corvette conversions to power upgrades for Colorado and Canyon trucks. The Charlotte-area company grew out of decades in motorsports, where the Malletts developed chassis and engine systems for endurance racing before turning that experience toward race-quality street cars. Today it also brings the same engineering approach to classic-car restomods and Mini Cooper sales and service.