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WLVM was founded in 2002, located in Yantai Development Zone. It is the first company in China to use "special copper" as its leading product. Its main business is to develop and produce high-strength and high-conductivity special copper alloy materials and products with special technology and special equipment. Service in high-speed rail, nuclear power, nuclear fusion, aerospace, military, metallurgy, and other fields. In recent years, through independent research and development of core technologies and independently manufactured key equipment, WLVM has overcome the difficult problem of high-strength, high-conductivity and ultra-long wire rods developed by the three national five-year plans, and built the world's first high-speed mass production line for CuCrZr contact wire; The localization task of the rotor end ring and conducting bar of the CRH train traction motor was completed.