电子商务可大致分为企业间的业务（ B to B）和企业对消费者的业务（ B to C）。从国际电子商务发展的实践和潮流看， B to B业务占据绝对主导地位，在全球电子商务销售额中所占比例高达 80～ 90％。当今国际上企业间的交易网络业务主要有两类，即企业自建网与中介服务网。前 E-commerce can be broadly divided into business-to-business (B to B) and business-to-consumer business (B to C). From the practice and trend of international e-commerce development, B to B business occupies the absolute dominant position in the global e-commerce sales as high as 80 ~ 90%. Nowadays, there are mainly two types of transaction network business between enterprises in the world, namely self-built network and intermediary service network of enterprises. before