“绿卡工程”的建设，使得邮政储蓄业务在很大程度上方便了公众，同时使邮政储蓄业务具有了较强的竞争能力。邮政、电信分营之前，“绿卡工程”是由“邮电局”建设的，通信线路是“公免”线路，通信费用没有计入邮政储蓄的成本，所以也用不着考虑通信线路的类型和费用。但... The construction of “Green Card Project” made the postal savings business convenient to the public to a large extent and at the same time enabled the postal savings business to have a strong competitive edge. Before the postal and telecommunications branches, the “Green Card Project” was constructed by the “Post and Telecommunications Bureau”. The communication line was a “public-free” line, and the communication fee was not included in the cost of postal savings. Therefore, it is not necessary to consider the type and cost of the communication line. but...