Abstract: | Metal Market: In May 2012, the LME copper futures, aluminium futures, zinc futures andlead futures experienced sharp downward trends on the whole. At end-May, the 3M copper futures closed at US$7437.5 per ton, down US$964.5 from the previous month; the 3M aluminium futures closed at US$1994 per ton, down US$125.5 from the previous month; |