SMM May 22nd: today, the spot price of electrolytic copper in North China is quoted for 150 yuan / ton to 200 yuan / ton for that month's contract, with a transaction price of 43680 yuan / ton ~ 43870 yuan / ton. Today, copper in Shanghai gave up most of the gains in the week, and copper prices fell back to 43600 yuan / ton, a decline of more than 800 yuan / ton. In the high rise of underwater consumption is difficult to boost, traders are forced to take the initiative to offer prices, downstream bargain-hunting mainly, transaction prices as low as 150 yuan / ton, the discount showed a high report low go, the overall buying is still more cautious.