马可波罗左侧产品列表导航菜单是一款适合B2B商城、分类信息网等，产品(商品)分类导航菜单。二级分类，非常整齐好看。-Marco Polo on the left navigation menu is a list of products for B2B Mall, classified ads, products (goods) category navigation menu. Secondary classification, very neat looking.