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April 2000 (RMB / t) Beijing Shanghai Tianjin Chongqing Shenyang Shijiazhuang Shandong Kunming Xi’an Purchase price Purchase price Purchase price Purchase price Purchase price Purchase price Purchase price Supply price Purchase price Supply price Purchase price Supply price Purchase price Supply price Offer price Supply price Purple copper 1500016000135001530013000145001340014200150001570012500145001440015600145001500013000148