1.国内聚乙烯醇市场综述单位：元/吨聚乙烯醇产品型号04月06日04月02日涨跌环比1799#23000-2400023000-240000/00%2699#24000-2500024000-250000/00%1788#24000-2550024000-255000/00%2099#23500-2420023500-242000/00%2488#25000