Spot copper in Shanghai was quoted at a contango of RMB 0-50/mt and a backwardation of RMB 0-100/mt over SHFE 1310 copper contract on Friday. Traded prices were RMB 52,000-52,200/mt for standard-quality copper, and RMB 52,100-52,350/mt for high-quality copper. Although goods on the market still consisted primarily of imported standard-quality copper, contango of standard-quality copper narrowed some. Cargo holders became anxious to sell after SHFE copper prices fell back near noon, preventing backwardation from rising. Traders favored high-quality copper, and some downstream producers also entered the market, improving trading slightly. In the afternoon, both quotes and traded prices for spot copper remained little changed. SHFE copper stocks increased by 10,461 mt to 161,585 mt during the week past. A large amount of imports arrived at ports, but buying interest downstream and goods delivery were negatively affected by the typhoon.