Therefore, since the beginning of 2 1 century, the world aluminum and aluminum processing industry have made rapid development, and aluminum and aluminum processing technology have entered a brand-new development period. At the same time, China aluminum and aluminum processing industry also set off the third development climax. In 2007, the world's primary aluminum output reached 38.8 million tons (including waste aluminum output170,000 tons), and the total aluminum consumption reached 42.75 million tons, a record high. The annual output of aluminum processed timber reaches 32 million tons, which is still increasing at the rate of 5% ~ 6% per year. The annual output of primary aluminum in China has reached 6.5438+02.6 million tons (including 2.5 million tons of waste aluminum), ranking first in the world for five consecutive years; The annual output of aluminum processed materials reached 1 1.76 million tons, which surpassed the United States to become the country with the largest output of aluminum processed materials in the world. At the same time, China's export volume of aluminum processed materials has also increased significantly, and China has truly become a world aluminum power and aluminum processing industry power. However, we should clearly see that the variety, quality and comprehensive economic and technical indicators of aluminum processed materials in China are still relatively backward, and the production equipment is not very advanced, still lagging behind the international advanced level.