Yun-city development of aluminum industry has obvious advantages, including aluminum industry has developed into a pillar industry of the city's industrial economy, magnesium industry in the province, national and global have a greater impact, aluminum industry has presented to the development of industrial clusters a good trend. I. Development Situation (A) Basic information At present, the city has an aluminum industrial enterprises, 18. Among them, two alumina producers (Table 2), electrolytic aluminum production enterprises 9 (Table 1), aluminum fabrication enterprises 7 (Sc...