求翻译：这就要求零售商建立销售和客户的信息系统,汇集客户电子数据库交换系统中各个销售点的销售数据和交易资料,甚至要与顾客保持良好的电子联系,是什么意思？

This requires retailers to establish sales and customer information system that brings together sales data and customer transaction data exchange electronic database each point of sale systems , or even to maintain good electronic contact with customers ,

正在翻译，请等待...

This request retail merchant establishment sale and customer information system, in collection customer electron database exchange system each sale point sales data and transaction material, even must keep the good electronic contact with the customer,

This requires retailers to establish sales and customer information systems, the pooling of clients ' electronic databases to exchange sales data and transactions of each point of sale information, or even to maintain good electrical contact with the customer,

正在翻译，请等待...