Cemented carbide is mainly composed of tungsten carbide powder of high hardness refractory metal, using cobalt, nickel and other metals as the binder，alloy material with extremely high hardness and good wear resistance after ball milling, pressing and sintering. The high hardness and high wear resistance of cemented carbide make it possible to manufacture various mining tools, cutting tools, wear-resistant tools, etc., which are widely used in construction machinery, metal cutting machine tools, automobile manufacturing, electronic information, aerospace military industry, etc. , known as the "teeth of industry".China is the country with the largest reserves of tungsten resources in the world. Hunan and Jiangxi provinces are the provinces with the richest tungsten resources reserves in our country, accounting for 50% of the country's total. As a raw material -oriented industry,the cemented carbide industry in our country shows the characteristics of regional distribution according to the distribution of tungsten ore resources in our country, and is mainly concentrated in Hunan, Jiangxi and other tungsten concentrated distribution areas.