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Zigong Cemented Carbide Co., Ltd. (hereinafter referred to as "self hardening company") was founded in 1965 during the third line construction period. It is a large-scale production enterprise of cemented carbide and tungsten molybdenum products independently established in China. In July 2006, Hunan Nonferrous Metals Co., Ltd. reformed the property right system of self hardening company through capital increase and share expansion. In 2010, Minmetals Group successfully acquired Hunan Nonferrous Metals Group and self hardening company It has become one of the core members of the cemented carbide and tungsten molybdenum industry under the Minmetals Group. The company has 3500 employees, with a total assets of 2.2 billion yuan. It has three bases for scientific research, production, operation and export of cemented carbide, hard surface materials and tungsten molybdenum products. It has six specialized production plants, two branches and six holding subsidiaries. Its products are widely used in machinery, metallurgy, petroleum, mining, construction, electronics, aerospace and other fields, with more than 40% of the production The products are exported to Europe, America, Japan and South Korea, Southeast Asia, the Middle East and other countries and regions, and the comprehensive strength ranks the first in China. In the past 50 years, the company has formed a complete manufacturing system supported by professional equipment, technology and high-quality professionals, and established three product R & D and production bases for cemented carbide, hard surface materials and tungsten molybdenum products, with more than 200 brands and 30000 specifications. The company has more than 100 scientific research achievements and new products, and has more than 160 authorized and effective patents. The company has passed ISO9001:2008 quality management system, ISO14001:2004 environmental management system, OHSAS18001:2007 occupational health and safety management system, iso10012:2003 measurement management system, GB / t29490-2013 intellectual property management system certification, and the quality testing center has obtained the laboratory accreditation certificate of China National Accreditation Service for conformity assessment (cnasl1927). The company focuses on continuously improving its position in the three business areas of cemented carbide, hard facing materials, tungsten and molybdenum products, guiding the development of the industry in multiple market segments and professional product areas, and becoming an enterprise citizen with a strong sense of social responsibility and the choice of strategic cooperation among users.

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