SHANGHAI, Sept. 27(SMM) –Shanghai spot copper offers were quoted between premiums of positive RMB 80-250/mt today. Traded prices for standard-quality copper were between RMB 55,100-55,600/mt, and RMB 55,150-55,800/mt for high-quality copper. There were significant changes in SHFE copper prices today. LME copper prices rallied in the morning business, improving market sentiment and promoting buying activity. However, panic sentiment was growing again when SHFE copper prices began to fall, while cargo-holders increased sell-offs. As a result, spot copper premiums fell rapidly. Market transactions fell after initially increasing.