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Founded in a basement factory by WWI veteran and former commercial pilot Elmer VanSickle in 1936, Cleveland Wheel & Brake Systems makes aircraft wheels, braking systems and related components. The Avon, Ohio company manufactures its wheel and brake assemblies in the USA and supports aircraft ranging from Cessna 172s and Pilatus PC-12s to Black Hawk and Apache helicopters. Now part of the Signia Aerospace family, Cleveland serves aviation and defense customers through a global distributor network.
Born in 1936 in Elmer VanSickle’s basement factory, Cleveland Wheel & Brake Systems has carried its aircraft-braking heritage from general aviation into military and rotorcraft programs. The Signia Aerospace company still manufactures its wheel and brake assemblies in the USA at its Avon, Ohio, factory while supporting aircraft operators through a global distributor network.
Founded by A.L. Crone in Cleveland in 1914, Cleveland Wirecloth & Manufacturing Co. weaves industrial wire cloth and turns it into precision-fabricated components for demanding applications. The company designs and manufactures in-house, combining more than a century of weaving expertise with engineering support and capabilities such as laser cutting. A founding member of the American Wire Cloth Institute, Cleveland Wirecloth maintains ISO 9001:2015 and AS 9100D certifications and remains family-owned following its 2023 acquisition by Freshwater Capital.
Founded in 1847, Cleveland-Cliffs is a North America-based, vertically integrated steel producer with operations across the United States and Canada. It mines iron ore and makes steel, then carries out downstream finishing, stamping, tooling, and tubing; its products include value-added sheet steel supplied particularly to the automotive industry. The company reports 60 operating facilities and approximately 25,000 employees as of February 2026.
Known for its deep Quadrajet expertise, Cliff’s High Performance helps vintage-GM enthusiasts bring original carburetors back to dependable street and track service. The Mount Vernon, Ohio, shop builds application-specific rebuild kits and tunes carburetors around each customer’s vehicle rather than treating every unit as an off-the-shelf job.
Since opening in 1971, Clifton Steel has built its identity around solving difficult wear problems for industrial customers from its Maple Heights operation. Its 140,000-square-foot facility reflects that practical, in-house approach, with the company producing custom components and military armor plate while supporting customers in fields such as recycling and mining. Clifton Steel holds ISO 9001:2015 and CMMC Level II certifications.
From its Mentor, Ohio operation, Climax Metal Products Company makes engineered shaft-locking and motion-control components, with shaft collars and rigid couplings at the core of its catalog. The company also supplies keyless locking devices under an exclusive agreement with MAV S.p.A. of Italy, alongside Clesco mounted bearings and abrasive hardware. Climax Metal Products Company holds ISO 9001:2015 certification.
For more than a century, Cincinnati-based Climax Packaging Machinery has made packaging equipment, dating its work to 1916. The company is especially known for producing more than 1,200 EUI uncasing machines and serves beverage makers along with manufacturers in several other industries.
Cliplight Manufacturing Company develops and manufactures lighting, sealants, air purification products, automotive service tools, and battery chargers. It serves the automotive and HVACR markets and provides customized OEM battery management and charging solutions.
Since 1941, Cincinnati-based Clippard Instrument Laboratory has manufactured miniature pneumatic valves and precision pressure and flow-control components. The third-generation family-owned company combines a catalog of more than 7,000 Minimatic® components with custom pneumatic and fluid-system engineering, including Cordis electronic controls and ultra-low-leak solutions. Clippard operates Class 7 clean rooms and maintains ISO 9001:2015 certification for its manufacturing and assembly work.
Clockwerk Industries LLC makes specialized computer-modification hardware, including cable-management components and custom parts for PC builds. Its work extends beyond catalog products to custom laser, CNC-router, and 3D-printed solutions such as engraved tempered glass and bespoke water manifolds.
Clopay Corporation manufactures residential and commercial garage doors and industrial rolling steel doors. Founded in 1859 as a Cincinnati paper wholesaler, it entered the garage-door business in 1964 and is headquartered in Mason, Ohio. The company reports operating four U.S. manufacturing facilities and a network of more than 55 distribution centers.
Founded in Melbourne in 2001 as a toner-cartridge recycling business, Close the Loop Group now develops circular solutions that recover materials, refurbish IT assets and produce sustainable packaging. Its distinctive collect-to-create model turns difficult waste streams into usable outputs such as TonerPlas® road additive and rFlex® recycled materials, with operations spanning Australia, the Americas and EMEA. The company holds ISO 9001, ISO 14001 and ISO 45001 certifications and operates under a zero-waste-to-landfill approach.
Founded by Eddie Ruben in 1985 as a Cincinnati garage startup, Closets and More, Inc. designs, manufactures, and installs custom storage systems for homes. The family-owned company still builds each system at its Reading Road facility, with President Zane Ruben carrying on his father’s work and a team that includes craftsmen with 10 to 20-plus years of tenure. Serving Greater Cincinnati, Northern Kentucky, and Dayton, it is known for handling the full process in-house, from design through installation.
Cloud Printing is a New York City print shop that combines custom design with professional printing and packaging for businesses, from everyday marketing materials to fine-art work. Its printshop artists consult with customers from concept through completion, and the team is noted for handling rush projects and demanding production timelines. The company also provides installation services for printed graphics.
A Baltimore dairy since 1919, Cloverland Farms is a longstanding local employer with more than 300 jobs and a century of ties to the Mid-Atlantic community. From its Baltimore facility, the company supplies milk and beverages to institutions and retailers throughout the region, working with local farms and participating in the National Dairy FARM Program.
Founded in 1903 by sisters Florence and Georgia Trader, Cincinnati’s Clovernook Center for the Blind & Visually Impaired produces more than 30 million Braille pages a year while providing employment for people who are blind or have low vision. Its century-old Braille Printing House anchors a broader mission that includes pediatric low-vision care, youth recreation and accessible resources for the blind and visually impaired community.
Clyde Industrial provides construction, maintenance, and repair services for the wind industry. Its listed capabilities include mechanical wind turbine erection and completion, QA/QC, bolting and tensioning, retrofits, on-site machining, bolt extrusion, re-tapping, gearbox repair, generator repair, and bearing repair.
Founded in 1980 by Al Caperna, CMC Group is a Bowling Green-based group of companies that manufactures labels, packaging, and water-soluble materials while supporting food-safety solutions. Its Center for Manufacturing Excellence brings together three Bowling Green facilities and one in Markham, Ontario, giving the group a unified manufacturing and warehousing operation. CMC Group’s businesses serve customers across the U.S. and internationally, with roots in Century Marketing’s original label-distribution operation.
CMC Pharmaceuticals, Inc. is a Solon-based drug development company that helps turn small-molecule candidates into manufacturable, submission-ready medicines through integrated CMC science, laboratory work, and regulatory support. Its FDA-inspected, cGMP-compliant laboratories and in-house pilot plant support development from early formulation through scale-up, while its RAMP program produces small prototype batches for preclinical and feasibility studies. Unlike a conventional testing lab or CDMO, CMC Pharma remains involved in selecting and overseeing external GMP manufacturers rather than operating a commercial GMP manufacturing facility of its own.