手机销售系统,产品二级分类展示：一级分类－－二级分类－－产品列表－－详细介绍（名称，图片，市场价，会员价，是否推荐，功能介绍，配置，货源等）－－商品评论 -handset sales, products displayed two classifications : a classification -- two classifications -- List of products -- details (name, photo, street, Member price, whether