SHANGHAI, Nov. 29 (SMM) – Spot copper in Shanghai was quoted at a premium of RMB 50-120/mt over SHFE 1312 copper contract on Friday. Traded prices were RMB 50,820-50,880/mt for standard-quality copper, and RMB 50,860-50,920/mt for high-quality copper. Most cargo holders held offers firm. A few traders with more capital entered the market, while downstream producers continued to hold to the sidelines against tightening cash.