Research and Implement of Redundancy Network Encryption Machine

In order to reduce the business costs and save social resources, as the representative of the industry chain network taxpayers, the Post and Telecommunications in desperate need of a solution to realize invoice minus coupon. Based on the above situation, many manufacturers make a network of tax control machine as the core of the invoice encrypted electronic stub solution. Therefore, this paper introduces a kind of high performance redundancy double control network tax-controlled encryption machine.