Founded in 1990 in Tongling, a major copper-producing center on the Yangtze, Tongling Jingda Special Magnet Wire Co., Ltd. manufactures electromagnetic wire and conductor solutions for motors, transformers and other electrical equipment. The publicly listed company has grown into a 24-subsidiary group with 17 research platforms and three CNAS-accredited laboratories, while its production clusters serve customers across China and international markets. Jingda is particularly active in electric-vehicle drive motors, where its copper flat wire is designed for high energy density, heat dissipation and corona resistance.
ISO 45001
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UL Approved
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RoHS Conformance
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REACH Correspondence
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Shanghai Stock Exchange Listed Company, Stock Code 600577
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CNAS Laboratories
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Sam Dong Co., LtdFounded in 1977, Sam Dong Co., Ltd. manufactures winding-wire materials and related copper products for the electrical-energy and equipment industries. Its portfolio ranges from oxygen-free high-conductivity copper to continuously transposed conductors and MgB₂ superconducting wire, supported by facilities in South Korea, the United States, and Poland.DELAWARE, OH
International Wire Group, IncFounded in 1885, International Wire manufactures copper and copper-alloy wire products from its headquarters in Camden, New York, serving customers across the United States and Europe. The company is the largest non-vertically integrated U.S. producer in its field, with capabilities spanning standard and custom conductors, braids, and engineered wire solutions for applications from electrification to e-mobility and industrial automation.CAMDEN, NY
Hyper Tech Research, IncFounded in 2001, Columbus-based Hyper Tech Research manufactures long-length magnesium diboride and niobium-tin superconducting wire while developing coils, cryogenic systems and other technologies for energy, medical and transportation applications. Its 41,000-square-foot facility has annual capacity exceeding 10,000 kilometers of wire, and the company’s patented continuous tube forming and filling process helped move MgB₂ wire from research into commercial manufacturing. More recently, Hyper Tech has expanded into high-power-density induction motors and grid technologies aimed at supporting electrification and a lower-carbon energy system.COLUMBUS, OH
Wieland-Werke AGFounded in 1820, Wieland-Werke AG develops and manufactures copper and copper-alloy semi-finished products, components and technical solutions for industries around the world. The company combines materials expertise with a global network of 89 locations, including service centers that keep extensive metal inventories available for regional processing and distribution. Its development work also includes virtual product engineering, accredited-laboratory support and specialized heat-transfer and electrification solutions.ALLIANCE, OH