SMM May 20: today, the spot price of electrolytic copper in North China is quoted for the month's contract with a transaction price of 43990 yuan / ton to 44160 yuan / ton. Smelters and traders continued yesterday's quotation, rising water 200 yuan / more, high copper price rising water, downstream consumption is generally light, procurement is mainly down-price transaction, the transaction price is below 200 yuan / ton, the average discount price is the same as yesterday, consumption is relatively light.