Since 1968, Nippon Kornmeyer Carbon Group has built its identity around high-performance materials engineering in close partnership with Japanese graphite manufacturer Nippon Carbon. From its Windhagen base, the company develops carbon-based components for demanding customers in fields such as semiconductor technology and aerospace, with Fraunhofer IISB collaborations behind its patented SICCOTA® and TACCOTA® coating technologies.
ISO 9001:2015
Semco CarbonSince 1971, Semco Carbon has specialized in custom machining carbon and graphite components, working exclusively with these materials from its Lorain, Ohio facility. Its 45,000-square-foot operation handles everything from prototype and repair work to parts made from raw blocks exceeding two tons, while maintaining nearly 400 tons of graphite inventory for quick production and direct material sales. Semco also purchases obsolete carbon and graphite for reclamation or appropriate disposal.LORAIN, OH
SGL CarbonSGL Carbon develops and manufactures carbon-based materials and engineered solutions, with particular depth in specialty graphite, carbon fibers and composite materials. The company combines material production with precision processing, engineering and services, including a fully integrated specialty-graphite value chain and process technology for corrosive applications. Based at 28 locations across Europe, North America and Asia, SGL Carbon employs around 3,800 people and reported 2025 revenue of €850 million.ST. MARYS, PA
Ei6Evolving from a Birmingham foundry-supply company founded in 1958, family-owned Ei6 now engineers and manufactures carbon and graphite materials and precision components for demanding industrial applications. The three-generation business combines global distribution with machining and powder operations, including custom graphite parts made to drawing and high-temperature materials. Ei6’s machining operation is certified to ISO 9001:2015 and AS9100:2016.PARMA, OH
AvCarb Material SolutionsWith roots in aerospace engineering stretching back more than 60 years—including heat shields used on Apollo lunar missions—AvCarb Material Solutions manufactures engineered carbon materials for clean-energy systems, transportation, and other demanding applications. The Lowell company is particularly known for gas diffusion layers developed through decades of collaboration with fuel-cell manufacturers, alongside woven carbon materials used in high-energy friction systems and fishing-reel drag washers. AvCarb is certified to ISO 9001:2015.WADSWORTH, OH