网上商城管理系统，完整的后台代码， 5、可定制缺货处理功能； 6、支持附件销售功能； 7、支持会员组批发功能； 8、支持预付款； 9、自动核算配送价格； 10、商品支持多类别； 11、支持在线备份数据库； 12、支持无限级商品类别； 13、可添加无限多种商品扩展属性，并可将扩展属性加入高级搜索； 14、支持多管理员，可自由设定管理员的可管理项； 15、自动生成报价单，商品价格一目了然；-Internet Shopping Mall Management System, complete the background code, 5, customizable out-of-stock treatment function　6, annex sales support functions　7, to support Member Group wholesale function　8 in support of the advance　9, automatic accounting distribution prices　10, support multiple types of commodities　11, in support of online backup database　12, to support the unlimited class category of goods　13, can add an unlimited variety of goods, extended attributes, and attributes will be extended by adding advanced search　14, support multi-manager, are free to set up administrator can set management　15, automatically generate quotations, commodity prices at a glance