SHANGHAI, Oct. 25 (SMM) – Spot copper discounts were negative RMB 150-280/mt in Shanghai in the morning business. Traded prices for standard-quality copper were between RMB 57,050-57,170/mt, and RMB 57,150-57,170/mt for high-quality copper. As SHFE copper prices slipped all the way after starting higher, pessimism grew in spot markets, and some traders tried to bid down prices to buy. Spot copper discounts expaded as a result. Buying increased at prices around RMB 57,000/mt near the midday, helping improve market transactions.