SMM, April 30: Shanghai electrolytic copper spot contract today rose 100 yuan / ton ~ 130 yuan / ton, Pingshui copper transaction price 42970 yuan / ton ~ 43070 yuan / ton, Shengshui copper transaction price 42980 yuan / ton ~ 43080 yuan / ton. Shanghai copper jump high open rebound to 42900 yuan / ton. The last trading day before May Day, the morning market quotation is still rising 120-130 yuan / ton quotation level, but the transaction is weak, so some holders take the lead to open the price adjustment model, strive to change cash, good copper down to 110 ~ 120 yuan / ton, Pingshui copper in the rising water 100 yuan / ton, transaction gradually carried out, wet copper to maintain yesterday's quotation rose 60 ~ 80 yuan / ton. The market continues to rise, the market performance is cautious wait and see, there is no obvious change in the transaction, under the market stalemate, the quotation is not as enthusiastic as the morning market, and the number of people standing in the market is increasing. There are a large number of shippers in the final trading market before the festival, the continuation of the rising water is difficult to attract trade speculators, the downstream performance is more weak, receiving few goods, pre-holiday clearance cash hedge characteristics are prominent.