Shanghai copper fell to an 18-month trough, tracking overnight losses in benchmark London Metal Exchange copper, with slowing Chinese growth and fitful US data casting a pall over the global economic recovery. The most-traded August copper contract on the Shanghai Futures Exchange fell to 51,920 yuan ($8,400) a tonne, its lowest since October 2011, before paring losses to trade at 52,900 yuan ($8,600), down 1.18 percent from Monday’s close.
