Selenium melon sand at Haiyuan Xingren County town, Guan Xiang,Gaoya Township plant has a long history, but there is no scale and advantages. Zhongwei City, after the establishment of municipal government put the development of selenium sand melon industry to speed up the development of mountain areas as a key strategy for the full forward, 2 years, selenium melon sand in this 3 township (town) area of the plant has reached 13 million mu and the emergence of many new bright spot.