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Tin mine Shanxing Antimony Industry Co., Ltd. is a large-scale non-ferrous metal joint enterprise, which was formally mined in 1897, integrating antimony mining, beneficiation, refining and scientific research. It is a manufacturer and supplier of antimony products. The company's market share of antimony products accounts for 30% of the whole country and 25% of the world. It is the main R & D and export base of national antimony products, and its products are exported to more than 50 countries and regions such as Japan, the United States and Europe. 1、 The company is located in Lengshuijiang City, Hunan Province. Xikuangshan antimony mine was discovered in 1541. At that time, antimony was mistakenly recognized as tin, hence the name of Xikuangshan, which has been used for a long time. In 1897, Xikuangshan antimony mine was officially mined. It is famous for its rich antimony resources, excellent quality and large output. It is also known as the "antimony capital of the world". Before 1949, imperialist countries such as Britain, the United States, Germany and Japan successively carried out predatory mining, which made the mining area a thousand holes and a thousand wounds. In October 1949, the tin mine was liberated and the mineral resources were recovered from the state. In March 1950, according to the instructions of the central government, the tin mining bureau was established to manage the exploration and mining of antimony in the tin mining area. In 1983, China National Nonferrous Metals Industry Corporation was established, and Tin Mine Bureau was under the management of China National Nonferrous Metals Industry Corporation. In 1998, it was affiliated to China rare earth group. In 2000, China rare earth group was disbanded and the tin mining bureau was transferred to Hunan Province for management. In 2001, the Tin Mine Bureau was restructured as a whole into tin mine Shanxing Antimony Industry Co., Ltd. In 2004, in order to integrate Hunan nonferrous metals industry, Hunan provincial government established Hunan Nonferrous Metals Holding Group Co., Ltd. the assets of tin mine flash star antimony industry Co., Ltd. were transferred into Hunan Nonferrous Metals Holding Group and became a member of Hunan Nonferrous Metals Holding Group. In 2005, according to the H-share listing requirements, the main body of SMSM Antimony Industry Co., Ltd. as the surviving company, became a wholly-owned subsidiary of Hunan Nonferrous Metals Co., Ltd., and the auxiliary business was separated to establish Hunan Nonferrous tin mine asset management company, which is a subsidiary of Hunan Nonferrous Metals Holding Group. In December 2009, Hunan Nonferrous Metals Holding Group was subordinate to China Minmetals Group Corporation. In June 2012, in order to improve the company's market competitiveness, the company shut down and exited the chemical industry. In 2016, in the face of severe economic situation and market competition, the company actively implemented the reform measures of "focusing on main business, separating auxiliary business, invigorating assets, innovating mechanism, stimulating vitality and breaking through barriers in blocks" in accordance with the requirements of Minmetals Group of "returning to the nature of operation, improving quality and efficiency and deepening reform", shut down and exited the zinc industry, reduced five secondary institutions, simplified 35 middle-level management, divided into We have resettled 2868 surplus personnel and gradually established a modern enterprise system with Chinese characteristics featuring excellent assets and efficient operation. 2、 Main products and business scope the business scope of the company is antimony products, containing gold, silver, precious antimony, copper by-products, etc. Its main products are antimony ingot, antimony trioxide, glycol antimony, antimony sulfide, sodium antimonate, dust-free antimony dioxide, nanometer antimony trioxide, golden antimony, etc., as well as flame retardant resin, rubber masterbatch, EVA masterbatch, PE masterbatch, PBT masterbatch. Other businesses include the export of self-produced products and related technologies, the import of raw and auxiliary materials, machines, equipment, instruments, meters, spare parts and related technologies needed for production and scientific research, the purchase of raw materials needed for production, the undertaking of Sino foreign joint venture, cooperative production and the business of "three supplies and one compensation". 3、 The company is the cradle of China's Antimony Industry and the birthplace of antimony production technology, with advanced antimony production technology and equipment. All production technologies of antimony products have independent intellectual property rights. So far, it has won 70 science and technology awards at the provincial and ministerial level or above, 36 national invention patents, presided over the preparation and revision of 43 national and industrial standards related to antimony, and participated in the preparation and revision of 13 national and industrial standards related to antimony. The company has developed two generations of antimony trioxides production technology. The second generation technology, the off-liquid top blowing method, has the advantages of good product quality, high production efficiency and high degree of automation. It can produce more than 20 new products, such as ultra-fine antimony oxide, catalyst antimony oxide, ultra-fine high-purity antimony oxide, etc., making the export of antimony products in China change from low-end to high-end. The technology of removing lead invented by the company has solved the problem of antimony smelting in the world, opened up a broad prospect for the utilization of high lead antimony, and is a revolution in antimony smelting technology. In 2003, a rapid arsenic and selenium removal agent was invented, which realized deep arsenic and selenium removal. At present, the Antimony Blast Furnace with oxygen rich volatilization smelting process is still a crude smelting furnace with large capacity in the world. The National 863 Plan "research and demonstration of key technologies for comprehensive utilization of arsenic alkali slag in antimony smelting" led by the company provides key common technologies for clean treatment of secondary arsenic alkali slag in China's history.

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