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Since 1977, Cincinnati Control Dynamics, Inc. has designed, built, supported, and calibrated airflow testing systems for aerospace and power-generation manufacturers. Cincinnati-based CCDI also develops custom flow fixtures, nozzles, and related equipment for demanding production environments, with more than 300 production airflow and effective-flow-area machines supported worldwide. Its lifecycle support includes calibration and service for both current and legacy equipment.
Cincinnati Custom Signs is a husband-and-wife-owned commercial signage company that designs, fabricates, installs and restores custom signs and graphics from its Cincinnati base. Owners Carl and Twyla Heinlein bring more than 25 years of leadership and communications experience, respectively, to projects ranging from business identification to ADA-compliant signage. The company serves customers across Ohio, Kentucky and Indiana, with work extending throughout the United States.
Founded in downtown Cincinnati in 1925 by brothers Milton and Ray Wurtzelbacher, Cincinnati Dowel & Wood Products is a family-owned manufacturer of dowels, plugs, custom turnings and other wood components. Now based in Mt. Orab, the company operates more than 45,000 square feet of manufacturing and warehouse space and has grown into a major wood bung supplier, serving more than 90% of cooperages and distilleries across North America. Its team also handles custom work from customer drawings, with dowels available in sizes from 1/8 inch to 6 inches in diameter and up to 16 feet long.
Founded in 1956, Cincinnati Fan manufactures industrial fans and blowers in cast aluminum and fabricated metal, with standard and custom designs spanning 1/4 to 600 horsepower. Based in Mason, Ohio, the company supports its equipment with more than 170 sales engineers across 56 offices in the U.S. and Canada, as well as replacement parts for existing installations. Cincinnati Fan maintains an ISO 9001:2015 certified quality management system, achieved in 2025.
Cincinnati Gasket & Industrial Manufacturing pairs custom industrial gasket production with precision-machined glass, including medical borosilicate components and sight glass for demanding process equipment. Its 65,000-square-foot operation combines glass and gasket machining with steel fabrication and component assembly, allowing the Cincinnati shop to build complete assemblies such as blast-resistant window frames and furnace viewports.
Since 1898, Cincinnati Incorporated has built made-to-order metal fabrication equipment in the USA, including press brakes, fiber laser systems, automation and related software. The privately held company operates a 500,000-square-foot plant and technical center on an 80-acre campus near Cincinnati, where its machines have supported American manufacturing for more than 125 years. Its long-running, family-oriented culture includes fourth-generation majority owner Christina March and a workforce that includes many veterans.
Since 1943, Cincinnati Industrial Machinery has built industrial washers, ovens, and finishing equipment, with a particular foothold in two-piece can processing. Its Ohio operation designs and manufactures equipment in-house at a 315,000-square-foot facility, while more than 450 of its can-processing machines are installed worldwide. The company also develops specialized high-output washers and dryers for battery-can production and supports installations through its Armor Aftermarket division.
Cincinnati Knife Outlet supplies industrial machine knives, including custom tooling for metalworking shears and blades for processing plastic and other manufactured materials. Its catalog also features inlaid paper trimmers, with material grades ranging from standard carbon tool steel to tungsten-carbide-tipped designs intended to extend time between sharpenings.
Cincinnati Machines supplies machine tools ranging from standard milling and turning equipment to exceptionally large machines used to produce, maintain, and repair wind-turbine generators. Based in Cincinnati, the company works with international partner factories and is especially notable for heavy-duty equipment such as lathes with 120-inch swings and 100-ton capacities. Its Cincinnati Grinding Systems & Automation Group also draws on more than 400 years of combined engineering expertise for new and remanufactured grinding systems, including automated production cells.
Founded in Cincinnati in 1999, family-owned Cincinnati Metal Fabricating makes precision metal parts, weldments, and assemblies for industrial and construction customers. Its 80,000-square-foot, two-building operation employs more than 75 workers and stands out for combining five 8,000-watt fiber lasers with AWS-certified welding and in-house 3-D CAD/CAM support. The company has passed every quality audit since its founding, while its first fabricator remains on the team.
Founded in the early 1920s and acquired by Edwin P. Stenger in 1924, Cincinnati Mine Machinery Company makes cutting and conveying equipment for underground mining. The Cincinnati manufacturer built its early reputation on forged cutter chains and patented the Duplex Chain in 1938, while later innovations included the dual-sprocket conveyor chain introduced in 2000. From its Cincinnati base, the company serves coal, salt, potash, gypsum and trona operations through a network that includes 15 strategically located warehouses.
Cincinnati Precast is a local manufacturer known for supplying durable parking blocks to businesses and contractors throughout the Cincinnati area. It also develops custom precast solutions for commercial and residential projects, with a team experienced in the construction industry.
With more than 100 years of combined experience behind it, Cincinnati Radiator designs and manufactures heavy-duty cooling systems and provides related service for industrial equipment. Based in Fairfield, Ohio, the company handles both new cooling packages and replacement or remanufactured radiators for obsolete equipment, while also offering custom fabrication and laser-cutting work from prototype through production. Cincinnati Radiator is a member of the International Heat Transfer Association and holds its Heavy Duty Certification.
Serving manufacturers from its Cincinnati-area facility since 1941, Cincinnati Steel Treating Company provides commercial heat treating that improves the durability and service life of gears, shafts, and other metal components. The company is especially known for gear hardening and for vertically processing long, slender parts with reduced distortion, while its staff includes a degreed metallurgist and an in-house laboratory. CST serves customers across the Midwest and beyond and maintains IATF 16949:2016 and ISO 14001:2015 registrations.
Since 2007, family-owned Cincinnati Stoneworks has fabricated and installed custom stone and quartz countertops for homes and commercial spaces across Greater Cincinnati. Its in-house team guides customers from slab selection through digital templating, fabrication, and installation, drawing on more than 100 years of combined industry experience. With 20,000-plus completed projects and a warehouse of more than 300 curated slabs, the West Chester studio combines a broad material selection with hands-on local service.
Founded in 1940 as an industrial-freezer supplier, Cincinnati Sub-Zero now manufactures standard and custom environmental test chambers that simulate demanding conditions so products can be tested for reliability. The Cincinnati company is known for its long experience in environmental simulation, its custom-engineered systems, and its patented Tundra® refrigeration technology. CSZ also fabricates and powder-coats metal parts for other manufacturers and operates as part of the Weiss Technik North America family.
Cincinnati Sub-Zero (CSZ) manufactures standard and custom environmental test chambers, including temperature/humidity, thermal shock, stability, altitude, vibration, HALT/HASS, walk-in/drive-in, and battery test chambers. It also manufactures industrial freezers and ovens, provides metal fabrication and powder-coating services, and serves aerospace, defense, automotive, electronics, medical, pharmaceutical, energy, telecommunications, and industrial markets.
Established in Southern Ohio in 1981, Cincinnati Test Systems designs and manufactures leak detection equipment, function test systems, and assembly verification systems for manufacturers worldwide. Its engineers support more than 50,000 test applications, from automotive and eMobility components to medical devices, while its A2LA-accredited laboratory produces NIST-traceable leak and flow standards to ISO 17025. CTS is also part of TASI Test and Automation’s Product Integrity segment.
Known for more than 25 years of service to the pump industry, Cincinnati Thermal Spray develops and applies protective thermal coatings for industrial customers. Its certified engineering team also supports aerospace and steel manufacturers with solutions designed to extend the working life of critical components.
Cincinnati Wood Collaborative creates custom woodwork and complete millwork packages in Cincinnati, with a particular focus on restaurants, bars and breweries. The shop sources local wood and works with other small businesses in the Queen City, while also making durable pieces such as butcher-block-style cutting boards. Its wood comes through certified Master Logging Companies that follow Ohio Forestry Association standards, and the business has been BBB-accredited since 2018.