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PS The market transaction of PS was slack in January,affected by the heavy snow and the cold weather,the transportation was blocked,the delivery of partial commodi-ties was delayed and the price of PS slightly went up.The market demand for
PS The market transaction of PS was slack in January, affected by the heavy snow and the cold weather, the transportation was blocked, the delivery of partial commodi-ties was delayed and the price of PS slightly went up. The market demand for