[SMM Copper Futures Midday Closing Brief] The SHFE copper 2509 contract pulled back from 78,780 yuan/mt in the morning, briefly dropping to 78,650 yuan/mt before rising again to around 78,700 yuan/mt, closing at 78,700 yuan/mt in the morning. The price spread between futures contracts for different months continued to fluctuate slightly, ranging from BACK10 to BACK30 yuan/mt during the morning trading session. The import profit margin for SHFE copper in the current month expanded by nearly 300 yuan/mt.