SMM, April 21: Shanghai electrolytic copper spot contract today rose 130 yuan / ton ~ 160 yuan / ton, Pingshui copper transaction price 41850 yuan / ton ~ 42190 yuan / ton, Shengshui copper transaction price 41860 yuan / ton ~ 42200 yuan / ton. Overnight crude oil prices fell sharply, US crude oil contract negative for the first time, triggering pessimistic expectations of demand, the overall trend of commodities is still weak, copper prices plummeted to 42000 yuan / ton below as low as 41700 yuan / ton line. The price of copper fell to attract part of the downstream buying, the market morning market continued yesterday's quotation rose 130 ~ 150 yuan / ton, the market inquiry enthusiasm is high, the low price supply transaction is positive, the Pingshui copper rises the water 140 yuan / ton below can press the price 5-10 yuan / ton to have the transaction, the good copper quotes in the rising water 150 ~ 160 yuan / ton, the transaction is inferior to the Pingshui copper. The wet copper is stable in the range of 100 ~ 110 yuan / ton. With the decline of the disk, holders continue to offer, water quotation is stable and there is little room for further decline, traders due to the lack of profit space and stop, the market in the context of precipitous uncertainty in the external environment, the overall performance is cautious.