document.write("<div class='udPage'><img src='/image/title.gif' width='8' height='9' />&nbsp;&nbsp;<b>上一篇：</b><a href='/productdetail.asp?product_id=175' class='blue'>单圈MODBUSRTU信号-----本安防爆编码器</a></div><div class='udPage'><img src='/image/title.gif' width='8' height='9' />&nbsp;&nbsp;<b>下一篇：</b><a href='/productdetail.asp?product_id=141' class='blue'>多圈RS485模拟信号双输出-防爆编码器</a></div>")