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OH
McGregor Metal is a Springfield, Ohio-based metal manufacturer producing parts and assemblies for OEMs and Tier 1 suppliers. Founded in 1965, it grew from a tool-and-die shop into a family-built operation with more than 300 employees across two plants, and is known for stamped parts and welded assemblies.
Founded in Dayton in 1970 as a three-person garage operation, McGregor Surmount now manufactures contract electronic assemblies and integrates engineering, production, and testing for customers around the world. Its Brookville operation spans more than 70,000 square feet and supports customer inventory management for just-in-time delivery. McGregor Surmount has received Whirlpool Corporation’s Supplier Performance Award and was named Supplier of the Year six times.
McGrory Glass Digital Collection creates decorative architectural glass by printing custom film interlayers and laminating them between glass panels. Acquired by McGrory Glass in 2017, the collection brings printed patterns, metallic finishes and other graphic treatments together with the practical benefits of laminated safety glass. Its Metallics and Radiance offerings can be produced in opaque or translucent appearances, with custom colors available for architectural projects.
Since April 1964, McHenry Industries has been a sign-industry wholesaler known for supporting large projects behind the scenes. It works with sign companies on demanding contract jobs, supplying custom signage and coordinating production to meet installation deadlines for customers across the country and around the world.
McJak Candy Company grew from Karen McCurdy’s home-kitchen lollipops into a family-owned candy factory in Medina, Ohio, making homemade confections one batch at a time. Founded in 1982 with family recipes and a focus on fundraising and retail, the company now produces its sweets in a 65,000-square-foot facility. Its lollipops remain a signature, alongside home-style fudge and inventive cotton-candy flavors.
Founded in Oak Forest, Illinois, in 1981, MCM Ind. Co., Inc. manufactures and sources components and assemblies for a range of industries. Its Cleveland plant produces parts including springs and wire forms, while the company also coordinates global sourcing and warehousing. MCM identifies itself as a minority woman-owned company and an active certified member of the Ohio Minority Supplier Development Council.
MCMILLANCO provides contract and precision blending, assembly, co-packing, kitting, warehousing, inventory management, fulfillment, and distribution services. It handles agricultural, feed, industrial, construction, mineral, chemical, and specialty materials, with capabilities including ribbon and paddle blending, bulk storage, bagging, palletizing, and rail-supported logistics.
McNational, Inc. is a marine transportation and repair group whose McGinnis shipyard builds and repairs inland towboats and barges. Founded in 1913 as Portsmouth Sand and Gravel Company, the business grew into a full-service marine company and later formed McNational as the parent company for its affiliates. It operates shipyards and marine services across the Ohio, Tennessee, and Mississippi river systems, with additional rail-engine repair capabilities.
Founded in 1913 to help build Portsmouth, Ohio’s first floodwall, McNational, Inc. is a marine transportation, shipyard, and repair group serving the inland waterways. Now operating across the Ohio, Tennessee, and Mississippi rivers, the company combines harbor and line-haul boats with six full-service shipyards, including facilities capable of constructing and repairing vessels up to 300 feet long. Its marine and rail engine work includes an AAR M1003-certified diesel shop, while its McGinnis division continues the family name’s South Point, Ohio, shipyard tradition.
McNeil Industries is a privately held Ohio manufacturer founded by Randall J. McNeil in 1986, growing from a basement operation into a 30-person company in Painesville. Today, it is known for high-precision CNC components made for demanding OEM and industrial applications, with quality systems certified to AS9100:2016 and ISO 9001:2015.
McNICHOLS CO is a family-owned business founded in 1952 by World War II veteran Robert L. “Bob” McNichols, whose faith and high ethical standards still shape the company’s customer-focused culture. Now led by the founder’s grandson, the Tampa-based company serves industrial and architectural customers nationwide through 19 Metals Service Centers, supplying specialty metal products and project-ready fabricated solutions. Its quality system is certified to ISO 9001:2015.
Since 1988, McQueen Sign Company has been a family-owned and operated Vermilion business making, installing, and maintaining custom signs for local businesses. Eric McQueen leads the company with his father, Richard, continuing a family sign-making tradition that dates to the late 1960s. The company also brings that sign-service expertise to LED and parking-lot lighting, with year-round repairs and 24/7 emergency availability.
A third-generation family business founded by John N. Lallo in 1956, McRoyal Industries is known for helping shape the original Arby’s restaurant interior before growing into a far-reaching custom millwork company. Based in Youngstown, the company has installed its work in 48 states and 12 countries while continuing to serve restaurant and commercial clients.
Founded by Philip Johnson in 1964, McShane, Inc. designs and manufactures temperature controllers, sensors, and custom control systems for OEM and industrial customers from its facility south of Cleveland. Its core work extends beyond standard products to prototype and volume manufacturing, including customized multi-zone and multi-channel systems for applications ranging from semiconductor equipment to medical instruments. McShane also provides contract and private-label manufacturing for specialized control needs.
Family-owned MCW Certified Welding is an AWS-certified custom welding and metal fabrication shop serving Northern Ohio, including Delta, Wauseon, Swanton and the Toledo area. The shop builds parts, projects and prototypes from blueprints or sketches, with mobile welding and structural steel work among its capabilities. Its stated focus is completing durable, precise work that meets recognized industry standards.
Since 1921, McWane Ductile has manufactured ductile iron pipe for water and wastewater infrastructure, pairing foundry production with project-specific fabrication services. A division of McWane Inc., the company operates three U.S. foundries in New Jersey, Ohio, and Utah and employs more than 1,000 people. Its Coshocton operation also produces ductile iron utility poles, including through a $50 million section-casting and annealing expansion completed in 2024.
Founded in Birmingham in 1921 as the McWane Cast Iron Pipe Company, McWane is a family-owned and operated manufacturer of infrastructure products. It grew from its cast-iron pipe roots into a company making products for water distribution and plumbing, fire safety, and pressure-vessel applications, with manufacturing facilities across North America and around the world.
From its Columbiana, Ohio facility, Md Plastics Inc. designs and manufactures plasticating components and patented technologies for injection molding, extrusion, blow molding, and 3D printing. The company has partnered with plastic processors for more than 45 years, with owner Mike Durina bringing decades of specialized engineering experience to custom solutions. Md Plastics holds nine awarded patents and is ISO 9001:2015 certified and Made in USA.
Founded in 1980, MDF Tool Corporation is a North Royalton toolmaker whose work has grown from a small shop into a 4,000-plus-project history serving aerospace and energy manufacturers. Now under new ownership since 2024, the company draws on more than four decades of experience to design and build investment-casting tooling, with particular expertise in aerospace and land-based turbine engine applications.
Founded by Matthew D. Fritz in 2005, MDFritz Technologies is a small, cross-trained Centerville manufacturer known for taking on demanding, varied assembly work with quick turnaround. The company serves OEMs and distributors, including customers in aerospace, and builds wire harnesses and industrial control panels under UL-recognized standards.