document.write("·<a href='article/");document.write("201706");document.write("/");document.write("460");document.write(".html'>上一条：");document.write("PE胶袋的分类和作用有哪些");document.write("</a>");document.write("<br />·<a href='article/");document.write("201706");document.write("/");document.write("458");document.write(".html'>下一条：");document.write("PE胶袋及PE塑料袋国家标准正式实施");document.write("</a>");