SHANGHAI, Nov. 29 (SMM) –Shanghai spot copper offers were quoted between premiums of positive RMB 450-600/mt today. Traded prices for standard-quality copper were between RMB 56,450-56,650/mt, and RMB 56,860-56,750/mt for high-quality copper. As SHFE copper prices fell after a low open and since the month’s end approaches, copper supply improved, but copper premiums stayed unchanged from the prior day. Market transactions were also restricted by cash flow problems.