Spot copper in Shanghai was quoted at a contango of RMB 0-20/mt and a backwardation of RMB 0-140/mt over SHFE 1311 copper contract in the morning. Traded prices were RMB 52,350-52,500/mt for standard-quality copper, and RMB 52,430-52,580/mt for high-quality copper. Cargo holders raised offers now that SHFE 1311 copper contracts have shifted to the new current-month contracts, but higher prices deterred buyers from buying. Low buying interest and ample supply compelled suppliers to cut offers, with standard-quality copper quoted at a contango near mid-day. Traders went bargain hunting, while downstream producers purchased only as needed. In the afternoon, spot copper was offered between a contango of RMB 0-20/mt and a backwardation of RMB 0-100/mt, with traded prices down slightly to RMB 52,300-52,450/mt. Spot market remained under oversupply pressure.