Zhuzhou Cemented Carbide Group Corp Ltd (ZCC) was one of China's 156 key projects constructed in the nation's "First Five-Year Plan".After more than 50 years of development, has come up as China's biggest base both for tungsten smelting and for the production, scientific research, sales and export of cemented carbide and its compatible tools. It mainly engages in the production and sales of 6 series of “Diamond” Brand products entitled as China's renowned brand, such as cemented carbide, tungsten, molybdenum, tantalum, niobium and cobalt.