SHANGHAI, Oct. 25 (SMM) – Spot copper in Shanghai was quoted at a contango of RMB 0-100/mt and a backwardation of RMB 0-10/mt over SHFE 1311 copper contract on Friday. Traded prices were RMB 51,780-51,840/mt for standard-quality copper, and RMB 51,820-51,920/mt for high-quality copper. Contango narrowed, especially for standard-quality copper. Backwardation was reported only for Guixi brand copper. Traders and downstream producers purchased modest amounts of goods at the bottom.