SHANGHAI, Jul. 12 (SMM) – Spot copper offers were between premiums of positive RMB 0-80/mt in Shanghai in the morning business. Traded prices for standard-quality copper were between RMB 55,400-55,480/mt, and RMB 55,450-55,550/mt for high-quality copper. As SHFE copper prices laced momentum to rebound, high-quality copper cargo-holders kept prices sticky and tried to increase premium quotes, but the market response was tepid. Actual market transactions were thus limited.