document.writeln('4月7日华东PTA现货价格重心大挫');document.writeln('PTA主力合约触及跌停');document.writeln('下游负反馈担忧 聚酯链飘绿');document.writeln('期市午盘收盘 短纤跌2.38% 棉花跌1.03% 棉纱跌0.89%');