SMM10, March 8: the following is a chart of metal ups and downs in Shanghai before and after the National Day in recent years. Copper, aluminum and zinc have basically gone up and down in half in the past decade, and the range is not very large. Most of the lead in Shanghai fell, thread closed up mainly, Shanghai nickel, Shanghai tin data are not much, each has its own ups and downs. This year's National Day Shanghai market metal is also mixed, the range is not large.