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Born in 2016 from the frustration of complicated charging, Chargii makes portable power banks, including the redesigned Chargii SE+ with built-in retractable cables and an integrated wall plug. After pausing during the pandemic, the brand relaunched in 2026 as a subsidiary of Plain City, Ohio’s Promo 4th Group, adding bespoke personalization at scale through its parent company’s in-house production capabilities.
Since 1886, Charles C. Lewis Company has supplied and processed carbon and alloy steel plate from its Springfield, Massachusetts headquarters and regional facilities. Its in-house work can take plate closer to final size through cutting, grinding, stress relieving and other processing, including toll work on customer-supplied material. The company’s steel bases for Christo and Jeanne-Claude’s 2005 “The Gates” installation in Central Park are among its most distinctive projects, and it holds Intertek ISO 9001:2015 certification.
Chart Industries is a global manufacturer built around deep cryogenic expertise, with a portfolio used throughout the liquid-gas supply chain. Its operations serve clean-energy and industrial-gas customers, while the Howden business brings more than 160 years of air- and gas-handling history to the company following its acquisition in 2023.
Family-owned Chart Tech Tool Inc. has been part of the Tipp City manufacturing community since 1965, when it began making optical comparator charts and sight gauges. After moving from Dayton to its current 35,000-square-foot facility in 1985, the company grew into a turnkey engineering and manufacturing partner for customers worldwide, with a particular history in custom automation work. It is QS9000 compliant and ITAR approved.
Charter Manufacturing Company, Inc. is a privately held, family-owned steel and iron production and manufacturing company founded in 1936, when the Mellowes family established Charter Wire in Milwaukee. Today, its family of businesses produces steel and iron products, including engineered components and castings, and has grown through four generations of family leadership.
Charter Next Generation is a North American manufacturer built around shared ownership: more than 2,600 employees are employee-owners, giving them a financial stake in the company’s success. Operating 18 facilities, CNG develops specialty films and material-science solutions for essential markets, with a particular focus on sustainability and reducing waste. Its employee-owned culture and GreenArrow™ sustainability platform distinguish a company known for turning materials expertise toward practical environmental challenges.
Charter Steel is an American producer of special bar quality steel, supplying customers around the world and operating integrated mini mills in Saukville, Wisconsin, and Cleveland, Ohio. The company melts, rolls, and processes steel, and is identified as a leading producer of cold heading quality steels and North America’s largest coil processor. Founded on a customer-focused steelmaking premise, Charter Steel is part of the Charter Manufacturing family of companies.
Founded by Chase Blum in 1932, Chase Doors makes specialty door systems and traces its beginnings to insulated walk-in coolers and specialty refrigeration equipment. It is known for double-acting impact traffic doors and has since expanded into made-to-order door systems. The company reports more than 300 employees and five vertically integrated manufacturing facilities.
Chatelain Graphics Signs & Plastics provides plastic fabrication, signage, vinyl graphics, large-format printing, and custom display-case and machine-guard work. The company works with sheet plastics including polycarbonate Lexan, acrylic Plexiglass, HDPE, UHMW, PVC, Komatex, and Sintra.
cHc is a full-service miscellaneous iron contractor and custom steel fabricator that has served the region since 1961. Based in Cincinnati and with a Columbus office, the company fabricates and installs metalwork for complex construction projects, including monumental stairs.
Founded by boat racer Bill Combs in Bucyrus, Ohio, in 1963, Checkmate Boats builds custom high-performance powerboats for speed-focused boating. Its current lineup includes the 2400 BRX, a bowrider that can exceed 90 mph with the Mercury Racing 500R, and the company’s 2024 2400 BRX was named Boating Magazine’s Performance Boat of the Year.
Checkpoint Surgical develops medical devices and biomaterials for peripheral nerve surgery, helping surgeons assess, protect, prepare and repair nerves during operations. Based in Independence, Ohio, the company pairs its nerve-care product portfolio with Nerve Master educational programs, surgeon partnerships and clinical studies investigating electrical stimulation to improve nerve healing. Its work spans intraoperative decision-making through nerve repair and restoration.
Checkpoint Systems, Inc., a division of CCL Industries, provides RFID, RF and electronic article surveillance technology for retailers and other industries. It combines a global apparel-label production network with RFID labeling, inventory-tracking and loss-prevention offerings, and reports 5,180 employees across 35 countries.
Chem Technologies, Ltd. manufactures custom rubber compounds, chemical dispersions, and customer-specified blends from its Middlefield, Ohio operations. Its blend and custom-mix work is integrated under one roof, backed by a management and technical team with more than 250 combined years of experience across six decades. The privately owned company has held ISO 9001 registration since September 2002 and is currently registered to ISO 9001:2015.
Chemical Methods, Inc. combines industrial chemical formulations with real-time monitoring and continuous-improvement support for metal manufacturers. Based in Brunswick, Ohio, the company develops application-specific chemistries and uses process data to help plants reduce waste, control pretreatment operations, and improve product quality. Its approach is distinctive enough to include custom on-site blending and a stated aim of helping customers use less chemistry, not simply selling more.
Founded by Kevin Woods, Chemical Process Solutions grew from its first order into a company serving industrial customers from a Nashville office and a production shop in Canal Fulton, Ohio. CPS is known for building environmentally focused chemical-processing systems and supporting them with engineering and maintenance for manufacturers in fields such as aerospace, defense, and metal finishing.
Chemical Solvents, Inc. combines chemical distribution with custom blending, toll manufacturing, and industrial waste services from its Cleveland, Ohio facility. It stocks and delivers more than 200 chemical products, with inventory exceeding 500,000 gallons, while its technical department develops proprietary blends and helps customers reduce VOCs and HAPs. CSI also operates a Part B-permitted treatment, storage, and disposal facility and was a founding member of both the National and Ohio Association of Chemical Recyclers.
Chemical Systems of Orlando has spent more than 45 years formulating and manufacturing cleaning, sanitation, and water-treatment chemicals, with a particular focus on food and beverage operations. Based in Zellwood, the company also provides contract manufacturing and custom formulations, backed by an on-site quality-assurance laboratory and a private fleet operated by trained, hazmat-certified drivers. Its food and beverage delivery programs have served the industry since 1979.
For more than 25 years, ChemInstruments has built adhesive-testing and sample-preparation equipment for laboratories and production teams from its Fairfield, Ohio, operation. Its engineers also develop customized test platforms and proprietary EZ Lab software, while validating equipment in the company’s own ISO-13485-accredited Chemsultants testing lab. The equipment is designed for testing adhesives, coatings, sealants, and paper- or film-based materials across industrial and consumer applications.
Chemlock Nutrition is a father-and-son company founded in 2010 by Arun and Kris Mehan, pairing Arun’s MIT chemistry background and more than 40 years of global experience with Kris’s drive to rethink animal nutrition. From its first cobalt product, the Cincinnati company has built its work around applying chemistry from outside the feed industry to solve animal-health challenges with more consistent, affordable ingredients. Its team serves feed manufacturers and livestock producers with science-led support backed by The Chemlock Standard quality program.