项目进口（万吨）出口（万吨）净进口日期当月环比同比当月环比同比增速1月32.0310.83%-16.65%0.854.00%240.00%9%2月35.2910.18%28.33%0.11-87.06%175.00%13%3月43.0521.99%218.18%0.129.09%-61.29%22%4月34.62-19.58%-25.95%0.138.33%