zc100/template/pc/common/include/tdk/document.htm

<?php
if(isset($seo_title2) && !empty($seo_title2)){ ?>

    <title>{$seo_title2}</title>
    <meta name="keywords" content="{$seo_keywords2}">
    <meta name="description" content="{$seo_description2}">

<?php }else{ ?>

    <title>{$area_name}{$seo_title}</title>
    <meta name="keywords" content="{$area_name}{$seo_keywords}">
    <meta name="description" content="{$area_name}{$seo_description}">

<?php } ?>