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KOPO Services L.L.C. provides engineering solutions and industrial craftsmanship services for small and midsize companies. The website explicitly mentions injection molding and injection moulding machines, but does not provide enough detail to identify specific products, materials, or end markets.
Founded in 1946, Hamilton’s Kornylak Corporation designs and builds specialized machinery for material handling and insulation manufacturing, including conveyors, robot wheels and equipment for structural insulated panels. The engineering-oriented manufacturer works from a more than 100,000-square-foot plant and has developed products and processes covered by over 100 patents. Its insulation machinery work dates to 1954, while its Vertiflo vertical conveyors include units that have been operating since 1952.
From its Medina headquarters and Louisville manufacturing plant, Koroseal Interior Products creates commercial interior surfaces that move from concept to installation, with a particular focus on wallcoverings and durable architectural solutions. Its design-led offering spans custom digital work and performance surfaces for demanding settings such as healthcare, where wall protection, wayfinding graphics, and easy-to-maintain finishes must work together. The company also publishes environmental and health product declarations and operates a sample takeback program that recycles returned samples.
Kosei St. Marys Corporation manufactures cast-aluminum automotive wheels in St. Marys, Ohio, with 43 million wheels produced and vehicles from major automakers among its applications. As an American company supported by Japan’s Kosei Aluminum Co., Ltd., it combines American and Japanese manufacturing and management expertise while emphasizing continuous improvement, defect prevention, and on-time delivery. Its environmental program addresses the effects of its operations through monitoring, compliance, and a reduce-reuse-recycle approach.
Founded in 1985, KOST USA is a family-founded Cincinnati company known for making and supplying fluid technologies for customers in the automotive and industrial markets. Its 110,000-square-foot production facility supports private-label partnerships and high-volume manufacturing, while an in-house laboratory backs the company’s KOSTCare fluid analysis service.
Founded by Jack Kotlyn in 1986, Cleveland-based Kotlyn Inc. specializes in industrial shot-blast equipment, fabricating, rebuilding, installing and servicing machines while also supplying replacement parts and dust-collection equipment. Its work spans repairs on blast machines from the 1940s through today, along with custom components such as manganese barrelheads and 4140 TGP shafts. The company’s inspection, training and consulting services are aimed at keeping customers’ equipment productive with minimal downtime.
Privately owned since its founding in 1915, Kottler Metal Products has built its identity around precision metal forming and long-term service from its Willoughby operation. The company is known for handling large structural sections for industrial, construction and architectural projects, with certified welding available when a formed assembly needs to be completed.
Since its start in a small Akron block building in 1976, Kovatch Castings has grown into a Uniontown manufacturer of precision investment castings for complex, high-strength components. The employee-owned company serves demanding aerospace, medical and defense applications from a 65,000-square-foot facility, producing castings in more than 150 alloys. Kovatch holds ISO 9001:2015, AS9100 and Nadcap NDT and welding certifications.
Founded in 1975, family-owned Kowalski Heat Treating specializes in distortion-sensitive thermal processing for difficult parts and demanding production work. The Cleveland company is known for taking on “PIA” jobs, pairing specialized thermal-processing divisions with custom fixturing, metallurgical testing and problem-solving support. Its K-VAC operation includes North America’s first 20-bar vacuum furnace, while K-SALT is described as the Midwest’s largest rack salt-to-salt facility.
Since its founding in 1911, KRACHT GmbH has grown as a German manufacturer known for more than a century of fluid-technology expertise. From its Werdohl base, the company develops and produces application-specific solutions in close cooperation with customers, serving industrial users in fields such as marine technology, process engineering and hydraulics.
Founded in Springfield in 1966 by Fritz Krafft, Krafft and Associates grew from its founder’s experience designing and building machinery into a precision metalworking company known for taking on unusually large or difficult jobs. The company’s seasoned production workforce handles grinding and lapping for customers who need tight tolerances, including low-volume work that other shops may not accept.
Family-owned for more than 55 years, Kraft Power has grown into a regional power-equipment company with more than 170 employees across nine sales and service facilities in eight states. It is known for staying involved after installation, with factory-trained technicians available around the clock to support the equipment used by businesses, institutions and other organizations.
Kris Klingmann founded Kraft Werks Group in 2018 to save a long-established Medina, Ohio, manufacturing facility and the jobs of 40 co-workers. The American manufacturer has since doubled in size while preserving the shop’s community roots and small-company spirit, engineering and fabricating industrial equipment for customers in the United States and abroad. In 2025, Kraft Werks joined Ohio-based Rafter Equipment under Ridgecrest Ventures.
Kraton Corporation is a specialty chemical manufacturer that produces specialty polymers and biobased chemicals, including styrenic block copolymers and pine-chemical products. Its history includes developing the first commercially viable styrenic block copolymers in 1955, and the company now operates manufacturing facilities across North America, Europe, and Asia. Kraton became part of DL Chemical in 2022 and relocated its headquarters to The Woodlands, Texas, in 2023.
After 50 years serving tooling manufacturers and manufacturing customers, Kraus Company is retiring and closing its business. The company supplied specialized press brake dies to metal-fabrication operations and stopped taking orders after announcing its closure in 2024.
Since Rose Kravitz opened a neighborhood corner store in 1939, Kravitz Deli has grown into a Mahoning Valley institution built around house-made corned beef, traditional deli fare and family recipes. The Belmont Avenue business is the oldest operating business on that corridor, and after three generations of Kravitz family involvement, ownership passed in 2022 to the family of Matthew Rydarowicz, who continues the deli’s local and family-centered tradition.
Krazy Glue has been a household name in North America since its instant adhesive was introduced in 1973. The brand manufactures super glue for people handling quick repairs or creative projects, with bonds that set in seconds and hold with more than 1,000 pounds of strength.
Kreate is a Findlay-based product development company known for its vertically integrated, end-to-end approach and a team with hundreds of patents and decades of combined industry experience. It helps retail partners turn overlooked product categories into private-label products, including items developed for The Home Depot. Its work spans the path from an initial idea through manufacturing and retail launch.
Kreate is a Findlay product development company whose team combines hundreds of patents with decades of experience in plastics manufacturing and product innovation. It works with retail partners to reimagine overlooked product categories, carrying ideas through development and manufacturing for private-label programs. Its all-electric molding operation and zero-waste processes set its manufacturing approach apart.
Established in 1898, family-owned Krema Nut Company makes roasted nuts and natural peanut butter in Columbus, Ohio. Its nuts are gently roasted by hand in small batches, while its creamy and crunchy peanut butter is made without added salt, sugar, or preservatives. Krema says it is one of the oldest peanut butter makers still manufacturing in the United States.