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Zhengzhou Yadesheng refractory Co.,Ltd.(former Zhengzhou Dongyu Special Refractory Co.,Ltd) dated back to 1980s. The company is located at the root of Mount .Song and close to Jingguang Railway and Longhai Railway,where the traffic is developed and communication devices are complete. Meanwhile,the region is rich in high-quality resources such as silica,bauxite and coal.These all provide advantaged conditions for the development if refractory. There are totally 660 employees in the company which has a fixed assets of RMB 120 million,annual output of refractory of 100,00 tons, and current capital of RMB 50 million.The company possesses productiojn ,test and inspection equipment including three tunnel kilns (one 168m high temperature tunnel kiln and two 80m ones). There are 96 pe…