SHANGHAI, Jan. 29 (SMM) – On January 29, spot copper was quoted at discounts of RMB 0-350/mt against SHFE 1402 copper contract prices in Shanghai. Standard-quality copper was traded at RMB 50,700-50,900/mt and high-quality copper was sold at RMB 50,900-51,100/mt. Most enterprises have closed for holiday. A few traders purchased imported copper and high-quality copper in the morning at discount of RMB 350/mt and RMB 200/mt, respectively. Trading then turned quiet, with only some cargo holders unwilling to sell at lows quoting at discount of RMB 0-150/mt.