SHANGHAI, Jul. 22 (SMM) – Spot copper in Shanghai was offered at a premium of RMB 180-440/mt over SHFE 1308 copper contract prices on Monday. Traded prices for standard-quality copper were between RMB 50,750-50,920/mt, and RMB 50,920-51,150/mt for high-quality copper. Rising SHFE copper prices allowed spot copper suppliers to raise spot premium. The price gap between standard-quality copper and high-quality copper remained large as high-quality copper gained favor from middlemen. Downstream producers, however, continued to buy only on an as-needed basis.