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From its Mansfield, Ohio manufacturing base, Classic Connectors USA makes ClampStar® electrical and mechanical shunts that permanently reinforce aging overhead-line connections without interrupting power. The company’s units repair or extend conductors in place, including weathered splices and damage from lightning or gunshots, while helping utilities raise capacity and reduce the risk of connector failure. Its products are proudly made in the USA and tested to ANSI C119.4 Class AA standards.
Founded in Columbus in 1987, Classic Delight makes ready-to-eat handheld foods for K-12 school menus, growing from a small sandwich operation into a St. Marys, Ohio, manufacturer with a broad line of hot and cold offerings. Its school-focused brands include the thick-crust Rippers pizza and sealed Stuffwich pockets, and the company also develops co-packed products to customer specifications. Classic Delight was acquired by GS Foods Group in 2021 and merged with Tools for Schools in 2023, adding mozzarella processing under the Classic Delight name.
For more than 50 years, Youngstown-based Classic Optical Laboratories has manufactured custom prescription eyewear through a centralized laboratory serving providers and high-volume programs nationwide. Its automated facility produces thousands of eyeglasses daily, supported by more than 175 lab technicians and licensed optician leadership. The lab processes more than 1.5 million orders annually, with a reported return rate below 0.05%, and has provided workplace safety eyewear programs for more than two decades.
Since 1877, Clauss has made professional-grade cutting tools and shears for demanding daily work as well as discerning home users. Its tools are built from superior-grade steel and through-hardened to hold an edge through extended use and repeated sharpening, with task-focused designs such as the adjustable UltraFlex shears accommodating gloved hands.
A global company with manufacturing facilities in four locations, Clayton Industries has been a trusted name in industrial steam technology for decades. It is known for compact, once-through steam generators designed for demanding industrial processes, from manufacturing to aerospace and chemical production.
Clean Remedies is a woman-owned, family-operated wellness company making hemp-derived CBD and THC products for everyday routines. Founder and CEO Meredith Farrow started the business after her experience with postpartum depression led her to seek natural alternatives, and the company now pairs organic and natural ingredients with third-party testing in an ISO-7 lab. Its products use USA-grown hemp, carry QR-linked certificates of analysis, and are made without animal testing.
Celebrating more than 100 years of parts-cleaning experience, Cleaning Technologies Group is a Cincinnati-based company serving precision and industrial manufacturers with tailored cleaning systems. Its specialized divisions also extend that work into food and beverage sanitation and engineering support.
CleanKore LLC is a Bay Village, Ohio-based denim technology company known for applying a patented process across the global denim supply chain. It works with mills, laundries, and brands to reduce the resources and cost involved in garment washing, while eliminating potassium permanganate spray without requiring new equipment or chemicals. The technology has been used on more than 40 million garments for 16 international brands, with savings independently verified by BluWin.
Founded in Cleveland in 2011, CLEANLIFE ENERGY LLC develops and manufactures LED lighting and low-voltage direct-current systems for homes, businesses, and major brands. Its work ranges from customized commercial lighting to smart, 48–51V DC whole-home systems, with the 2024 acquisition of ATX LED expanding its low-voltage technology. The company also serves consumer markets through national retailers and operates from its Cleveland headquarters.
CleanLife Products makes No-Rinse® personal-care products that clean hair, skin and hands without traditional soap, water or rinsing. Made in the USA, its formulas are designed for dignified daily care at home or in hospitals and care facilities, as well as for travel and outdoor use. The company’s products are hospital tested and approved, and its No-Rinse® line is PETA certified.
Clear Image Technology develops direct-visualization medical imaging systems, including the portable C Scope® 2.2mm single-use arthroscope, from its base in Westlake, Ohio. The company says more than 10 years of work in medical imaging led to its modular hardware and software platform, designed to give physicians real-time views during diagnosis and treatment. Its systems are aimed at making needle arthroscopy more accessible across offices, procedure rooms, surgery centers, and operating rooms.
ClearGuard LLC makes dielectric and base oils for electrical infrastructure, industrial formulations, and single-phase data-center immersion cooling. Based in Canton, Ohio, the company uses exclusive access to Hydrodec’s patented refining process to decontaminate used transformer oil and restore its electrical properties, while also applying the process to unused feedstock. Its Exchange Program closes the loop by testing and collecting used oil, then supplying replenished product and credits.
Cleary Machine Company, Inc. provides precision CNC machining, fabrication, prototyping, production, mechanical assembly, equipment refurbishment, repair, and related engineering services. Its capabilities include milling, turning, laser cutting, EDM, welding, sheet metal forming, inspection, and secondary finishing operations.
Clenzoil is a veteran- and law-enforcement-owned company whose roots reach back to 1948, when rifleman and firearms historian Ellis Christian Lenz founded the brand. Acquired in 2015 by Air Force veteran James Albritton, it remains best known for firearm care while extending its maintenance products to outdoor enthusiasts beyond the shooting range.
Founded in 1946 by Mike Brashear after he handled upholstery for Cincinnati’s Vernon Manor Hotel, Clermont Upholstery is a family-owned shop that restores and custom-upholsters furniture for homes and businesses. Vincent Brashear now owns the company, while his son Jamie represents its third generation, and the in-house team keeps customers’ work under one roof rather than subcontracting it. The shop also operates a fabric store and can arrange furniture pickup and delivery.
Since 1941, Cleveland Black Oxide has built its identity around helping manufacturers finish metal parts, with customers spanning the United States and Canada. The Brooklyn, Ohio company is known for black oxide coating work on demanding applications and has maintained ISO 9001:2015 certification since 1994.
From his Medina kitchen, Nick personally designs, bakes, decorates, and delivers handcrafted cakes for celebrations across Northeast Ohio. Cleveland Cake Boss is built around one-on-one custom artistry, turning everything from character themes to wedding tiers into edible designs made fresh to order. Nick brings nearly 20 years of professional cake-decorating experience to each creation.
Cleveland City Forge is an American manufacturer and engineering company producing standard and custom forged steel structural hardware and components. It has more than 150 years of history and serves construction, architectural, energy, rigging and lifting, industrial, transportation, and off-highway applications.
With roots going back more than a century, Cleveland Controls designs and manufactures U.S.-made sensing switches that prove, measure, and control air and gas flow. Its products serve HVAC, boiler and burner control, and process-monitoring applications worldwide, while its engineering team also develops custom solutions for unusual environmental or mounting requirements. Cleveland Controls holds ISO 9001:2015 certification along with CSA, UL, CE, and UKCA approvals.
Family-owned Cleveland Crating Inc. is a Valley View, Ohio, packaging company known for protecting equipment in transit through custom wood shipping solutions. Its computer-aided designs meet Military and ASTM standards, while HT/KD certification supports international shipments requiring ISPM 15 treatment.